| /* |
| * Copyright 1999-2005 Sun Microsystems, Inc. All Rights Reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| * CA 95054 USA or visit www.sun.com if you need additional information or |
| * have any questions. |
| * |
| */ |
| |
| /* |
| * Gamma (Hotspot internal engineering test) launcher based on 1.6.0-b28 JDK, |
| * search "GAMMA" for gamma specific changes. |
| */ |
| |
| #include "java.h" |
| #include <dirent.h> |
| #include <dlfcn.h> |
| #include <fcntl.h> |
| #include <inttypes.h> |
| #include <stdio.h> |
| #include <string.h> |
| #include <stdlib.h> |
| #include <limits.h> |
| #include <sys/stat.h> |
| #include <unistd.h> |
| #include <sys/types.h> |
| |
| #ifndef GAMMA |
| #include "manifest_info.h" |
| #include "version_comp.h" |
| #endif |
| |
| #define JVM_DLL "libjvm.so" |
| #define JAVA_DLL "libjava.so" |
| |
| #ifndef GAMMA /* launcher.make defines ARCH */ |
| |
| /* |
| * If a processor / os combination has the ability to run binaries of |
| * two data models and cohabitation of jre/jdk bits with both data |
| * models is supported, then DUAL_MODE is defined. When DUAL_MODE is |
| * defined, the architecture names for the narrow and wide version of |
| * the architecture are defined in BIG_ARCH and SMALL_ARCH. Currently |
| * only Solaris on sparc/sparcv9 and i586/amd64 is DUAL_MODE; linux |
| * i586/amd64 could be defined as DUAL_MODE but that is not the |
| * current policy. |
| */ |
| |
| #ifdef _LP64 |
| |
| # ifdef ia64 |
| # define ARCH "ia64" |
| # elif defined(amd64) |
| # define ARCH "amd64" |
| # elif defined(__sparc) |
| # define ARCH "sparcv9" |
| # else |
| # define ARCH "unknown" /* unknown 64-bit architecture */ |
| # endif |
| |
| #else /* 32-bit data model */ |
| |
| # ifdef i586 |
| # define ARCH "i386" |
| # elif defined(__sparc) |
| # define ARCH "sparc" |
| # endif |
| |
| #endif /* _LP64 */ |
| |
| #ifdef __sun |
| # define DUAL_MODE |
| # ifdef __sparc |
| # define BIG_ARCH "sparcv9" |
| # define SMALL_ARCH "sparc" |
| # else |
| # define BIG_ARCH "amd64" |
| # define SMALL_ARCH "i386" |
| # endif |
| # include <sys/systeminfo.h> |
| # include <sys/elf.h> |
| # include <stdio.h> |
| #else |
| # ifndef ARCH |
| # include <sys/systeminfo.h> |
| # endif |
| #endif |
| |
| #endif /* ifndef GAMMA */ |
| |
| /* pointer to environment */ |
| extern char **environ; |
| |
| #ifndef GAMMA |
| |
| /* |
| * A collection of useful strings. One should think of these as #define |
| * entries, but actual strings can be more efficient (with many compilers). |
| */ |
| #ifdef __linux__ |
| static const char *system_dir = "/usr/java"; |
| static const char *user_dir = "/java"; |
| #else /* Solaris */ |
| static const char *system_dir = "/usr/jdk"; |
| static const char *user_dir = "/jdk"; |
| #endif |
| |
| #endif /* ifndef GAMMA */ |
| |
| /* |
| * Flowchart of launcher execs and options processing on unix |
| * |
| * The selection of the proper vm shared library to open depends on |
| * several classes of command line options, including vm "flavor" |
| * options (-client, -server) and the data model options, -d32 and |
| * -d64, as well as a version specification which may have come from |
| * the command line or from the manifest of an executable jar file. |
| * The vm selection options are not passed to the running |
| * virtual machine; they must be screened out by the launcher. |
| * |
| * The version specification (if any) is processed first by the |
| * platform independent routine SelectVersion. This may result in |
| * the exec of the specified launcher version. |
| * |
| * Typically, the launcher execs at least once to ensure a suitable |
| * LD_LIBRARY_PATH is in effect for the process. The first exec |
| * screens out all the data model options; leaving the choice of data |
| * model implicit in the binary selected to run. However, in case no |
| * exec is done, the data model options are screened out before the vm |
| * is invoked. |
| * |
| * incoming argv ------------------------------ |
| * | | |
| * \|/ | |
| * CheckJVMType | |
| * (removes -client, -server, etc.) | |
| * \|/ |
| * CreateExecutionEnvironment |
| * (removes -d32 and -d64, |
| * determines desired data model, |
| * sets up LD_LIBRARY_PATH, |
| * and exec's) |
| * | |
| * -------------------------------------------- |
| * | |
| * \|/ |
| * exec child 1 incoming argv ----------------- |
| * | | |
| * \|/ | |
| * CheckJVMType | |
| * (removes -client, -server, etc.) | |
| * | \|/ |
| * | CreateExecutionEnvironment |
| * | (verifies desired data model |
| * | is running and acceptable |
| * | LD_LIBRARY_PATH; |
| * | no-op in child) |
| * | |
| * \|/ |
| * TranslateDashJArgs... |
| * (Prepare to pass args to vm) |
| * | |
| * | |
| * | |
| * \|/ |
| * ParseArguments |
| * (ignores -d32 and -d64, |
| * processes version options, |
| * creates argument list for vm, |
| * etc.) |
| * |
| */ |
| |
| static char *SetExecname(char **argv); |
| static char * GetExecname(); |
| static jboolean GetJVMPath(const char *jrepath, const char *jvmtype, |
| char *jvmpath, jint jvmpathsize, char * arch); |
| static jboolean GetJREPath(char *path, jint pathsize, char * arch, jboolean speculative); |
| |
| const char * |
| GetArch() |
| { |
| static char *arch = NULL; |
| static char buf[12]; |
| if (arch) { |
| return arch; |
| } |
| |
| #ifdef ARCH |
| strcpy(buf, ARCH); |
| #else |
| sysinfo(SI_ARCHITECTURE, buf, sizeof(buf)); |
| #endif |
| arch = buf; |
| return arch; |
| } |
| |
| void |
| CreateExecutionEnvironment(int *_argcp, |
| char ***_argvp, |
| char jrepath[], |
| jint so_jrepath, |
| char jvmpath[], |
| jint so_jvmpath, |
| char **original_argv) { |
| /* |
| * First, determine if we are running the desired data model. If we |
| * are running the desired data model, all the error messages |
| * associated with calling GetJREPath, ReadKnownVMs, etc. should be |
| * output. However, if we are not running the desired data model, |
| * some of the errors should be suppressed since it is more |
| * informative to issue an error message based on whether or not the |
| * os/processor combination has dual mode capabilities. |
| */ |
| |
| char *execname = NULL; |
| int original_argc = *_argcp; |
| jboolean jvmpathExists; |
| |
| /* Compute the name of the executable */ |
| execname = SetExecname(*_argvp); |
| |
| #ifndef GAMMA |
| /* Set the LD_LIBRARY_PATH environment variable, check data model |
| flags, and exec process, if needed */ |
| { |
| char *arch = (char *)GetArch(); /* like sparc or sparcv9 */ |
| char * jvmtype = NULL; |
| int argc = *_argcp; |
| char **argv = original_argv; |
| |
| char *runpath = NULL; /* existing effective LD_LIBRARY_PATH |
| setting */ |
| |
| int running = /* What data model is being ILP32 => |
| 32 bit vm; LP64 => 64 bit vm */ |
| #ifdef _LP64 |
| 64; |
| #else |
| 32; |
| #endif |
| |
| int wanted = running; /* What data mode is being |
| asked for? Current model is |
| fine unless another model |
| is asked for */ |
| |
| char* new_runpath = NULL; /* desired new LD_LIBRARY_PATH string */ |
| char* newpath = NULL; /* path on new LD_LIBRARY_PATH */ |
| char* lastslash = NULL; |
| |
| char** newenvp = NULL; /* current environment */ |
| |
| char** newargv = NULL; |
| int newargc = 0; |
| #ifdef __sun |
| char* dmpath = NULL; /* data model specific LD_LIBRARY_PATH, |
| Solaris only */ |
| #endif |
| |
| /* |
| * Starting in 1.5, all unix platforms accept the -d32 and -d64 |
| * options. On platforms where only one data-model is supported |
| * (e.g. ia-64 Linux), using the flag for the other data model is |
| * an error and will terminate the program. |
| */ |
| |
| { /* open new scope to declare local variables */ |
| int i; |
| |
| newargv = (char **)MemAlloc((argc+1) * sizeof(*newargv)); |
| newargv[newargc++] = argv[0]; |
| |
| /* scan for data model arguments and remove from argument list; |
| last occurrence determines desired data model */ |
| for (i=1; i < argc; i++) { |
| |
| if (strcmp(argv[i], "-J-d64") == 0 || strcmp(argv[i], "-d64") == 0) { |
| wanted = 64; |
| continue; |
| } |
| if (strcmp(argv[i], "-J-d32") == 0 || strcmp(argv[i], "-d32") == 0) { |
| wanted = 32; |
| continue; |
| } |
| newargv[newargc++] = argv[i]; |
| |
| #ifdef JAVA_ARGS |
| if (argv[i][0] != '-') |
| continue; |
| #else |
| if (strcmp(argv[i], "-classpath") == 0 || strcmp(argv[i], "-cp") == 0) { |
| i++; |
| if (i >= argc) break; |
| newargv[newargc++] = argv[i]; |
| continue; |
| } |
| if (argv[i][0] != '-') { i++; break; } |
| #endif |
| } |
| |
| /* copy rest of args [i .. argc) */ |
| while (i < argc) { |
| newargv[newargc++] = argv[i++]; |
| } |
| newargv[newargc] = NULL; |
| |
| /* |
| * newargv has all proper arguments here |
| */ |
| |
| argc = newargc; |
| argv = newargv; |
| } |
| |
| /* If the data model is not changing, it is an error if the |
| jvmpath does not exist */ |
| if (wanted == running) { |
| /* Find out where the JRE is that we will be using. */ |
| if (!GetJREPath(jrepath, so_jrepath, arch, JNI_FALSE) ) { |
| fprintf(stderr, "Error: could not find Java 2 Runtime Environment.\n"); |
| exit(2); |
| } |
| |
| /* Find the specified JVM type */ |
| if (ReadKnownVMs(jrepath, arch, JNI_FALSE) < 1) { |
| fprintf(stderr, "Error: no known VMs. (check for corrupt jvm.cfg file)\n"); |
| exit(1); |
| } |
| |
| jvmpath[0] = '\0'; |
| jvmtype = CheckJvmType(_argcp, _argvp, JNI_FALSE); |
| |
| if (!GetJVMPath(jrepath, jvmtype, jvmpath, so_jvmpath, arch )) { |
| fprintf(stderr, "Error: no `%s' JVM at `%s'.\n", jvmtype, jvmpath); |
| exit(4); |
| } |
| } else { /* do the same speculatively or exit */ |
| #ifdef DUAL_MODE |
| if (running != wanted) { |
| /* Find out where the JRE is that we will be using. */ |
| if (!GetJREPath(jrepath, so_jrepath, ((wanted==64)?BIG_ARCH:SMALL_ARCH), JNI_TRUE)) { |
| goto EndDataModelSpeculate; |
| } |
| |
| /* |
| * Read in jvm.cfg for target data model and process vm |
| * selection options. |
| */ |
| if (ReadKnownVMs(jrepath, ((wanted==64)?BIG_ARCH:SMALL_ARCH), JNI_TRUE) < 1) { |
| goto EndDataModelSpeculate; |
| } |
| jvmpath[0] = '\0'; |
| jvmtype = CheckJvmType(_argcp, _argvp, JNI_TRUE); |
| /* exec child can do error checking on the existence of the path */ |
| jvmpathExists = GetJVMPath(jrepath, jvmtype, jvmpath, so_jvmpath, |
| ((wanted==64)?BIG_ARCH:SMALL_ARCH)); |
| |
| } |
| EndDataModelSpeculate: /* give up and let other code report error message */ |
| ; |
| #else |
| fprintf(stderr, "Running a %d-bit JVM is not supported on this platform.\n", wanted); |
| exit(1); |
| #endif |
| } |
| |
| /* |
| * We will set the LD_LIBRARY_PATH as follows: |
| * |
| * o $JVMPATH (directory portion only) |
| * o $JRE/lib/$ARCH |
| * o $JRE/../lib/$ARCH |
| * |
| * followed by the user's previous effective LD_LIBRARY_PATH, if |
| * any. |
| */ |
| |
| #ifdef __sun |
| /* |
| * Starting in Solaris 7, ld.so.1 supports three LD_LIBRARY_PATH |
| * variables: |
| * |
| * 1. LD_LIBRARY_PATH -- used for 32 and 64 bit searches if |
| * data-model specific variables are not set. |
| * |
| * 2. LD_LIBRARY_PATH_64 -- overrides and replaces LD_LIBRARY_PATH |
| * for 64-bit binaries. |
| * |
| * 3. LD_LIBRARY_PATH_32 -- overrides and replaces LD_LIBRARY_PATH |
| * for 32-bit binaries. |
| * |
| * The vm uses LD_LIBRARY_PATH to set the java.library.path system |
| * property. To shield the vm from the complication of multiple |
| * LD_LIBRARY_PATH variables, if the appropriate data model |
| * specific variable is set, we will act as if LD_LIBRARY_PATH had |
| * the value of the data model specific variant and the data model |
| * specific variant will be unset. Note that the variable for the |
| * *wanted* data model must be used (if it is set), not simply the |
| * current running data model. |
| */ |
| |
| switch(wanted) { |
| case 0: |
| if(running == 32) { |
| dmpath = getenv("LD_LIBRARY_PATH_32"); |
| wanted = 32; |
| } |
| else { |
| dmpath = getenv("LD_LIBRARY_PATH_64"); |
| wanted = 64; |
| } |
| break; |
| |
| case 32: |
| dmpath = getenv("LD_LIBRARY_PATH_32"); |
| break; |
| |
| case 64: |
| dmpath = getenv("LD_LIBRARY_PATH_64"); |
| break; |
| |
| default: |
| fprintf(stderr, "Improper value at line %d.", __LINE__); |
| exit(1); /* unknown value in wanted */ |
| break; |
| } |
| |
| /* |
| * If dmpath is NULL, the relevant data model specific variable is |
| * not set and normal LD_LIBRARY_PATH should be used. |
| */ |
| if( dmpath == NULL) { |
| runpath = getenv("LD_LIBRARY_PATH"); |
| } |
| else { |
| runpath = dmpath; |
| } |
| #else |
| /* |
| * If not on Solaris, assume only a single LD_LIBRARY_PATH |
| * variable. |
| */ |
| runpath = getenv("LD_LIBRARY_PATH"); |
| #endif /* __sun */ |
| |
| #ifdef __linux |
| /* |
| * On linux, if a binary is running as sgid or suid, glibc sets |
| * LD_LIBRARY_PATH to the empty string for security purposes. (In |
| * contrast, on Solaris the LD_LIBRARY_PATH variable for a |
| * privileged binary does not lose its settings; but the dynamic |
| * linker does apply more scrutiny to the path.) The launcher uses |
| * the value of LD_LIBRARY_PATH to prevent an exec loop. |
| * Therefore, if we are running sgid or suid, this function's |
| * setting of LD_LIBRARY_PATH will be ineffective and we should |
| * return from the function now. Getting the right libraries to |
| * be found must be handled through other mechanisms. |
| */ |
| if((getgid() != getegid()) || (getuid() != geteuid()) ) { |
| return; |
| } |
| #endif |
| |
| /* runpath contains current effective LD_LIBRARY_PATH setting */ |
| |
| jvmpath = strdup(jvmpath); |
| new_runpath = MemAlloc( ((runpath!=NULL)?strlen(runpath):0) + |
| 2*strlen(jrepath) + 2*strlen(arch) + |
| strlen(jvmpath) + 52); |
| newpath = new_runpath + strlen("LD_LIBRARY_PATH="); |
| |
| |
| /* |
| * Create desired LD_LIBRARY_PATH value for target data model. |
| */ |
| { |
| /* remove the name of the .so from the JVM path */ |
| lastslash = strrchr(jvmpath, '/'); |
| if (lastslash) |
| *lastslash = '\0'; |
| |
| |
| /* jvmpath, ((running != wanted)?((wanted==64)?"/"BIG_ARCH:"/.."):""), */ |
| |
| sprintf(new_runpath, "LD_LIBRARY_PATH=" |
| "%s:" |
| "%s/lib/%s:" |
| "%s/../lib/%s", |
| jvmpath, |
| #ifdef DUAL_MODE |
| jrepath, ((wanted==64)?BIG_ARCH:SMALL_ARCH), |
| jrepath, ((wanted==64)?BIG_ARCH:SMALL_ARCH) |
| #else |
| jrepath, arch, |
| jrepath, arch |
| #endif |
| ); |
| |
| |
| /* |
| * Check to make sure that the prefix of the current path is the |
| * desired environment variable setting. |
| */ |
| if (runpath != NULL && |
| strncmp(newpath, runpath, strlen(newpath))==0 && |
| (runpath[strlen(newpath)] == 0 || runpath[strlen(newpath)] == ':') && |
| (running == wanted) /* data model does not have to be changed */ |
| #ifdef __sun |
| && (dmpath == NULL) /* data model specific variables not set */ |
| #endif |
| ) { |
| |
| return; |
| |
| } |
| } |
| |
| /* |
| * Place the desired environment setting onto the prefix of |
| * LD_LIBRARY_PATH. Note that this prevents any possible infinite |
| * loop of execv() because we test for the prefix, above. |
| */ |
| if (runpath != 0) { |
| strcat(new_runpath, ":"); |
| strcat(new_runpath, runpath); |
| } |
| |
| if( putenv(new_runpath) != 0) { |
| exit(1); /* problem allocating memory; LD_LIBRARY_PATH not set |
| properly */ |
| } |
| |
| /* |
| * Unix systems document that they look at LD_LIBRARY_PATH only |
| * once at startup, so we have to re-exec the current executable |
| * to get the changed environment variable to have an effect. |
| */ |
| |
| #ifdef __sun |
| /* |
| * If dmpath is not NULL, remove the data model specific string |
| * in the environment for the exec'ed child. |
| */ |
| |
| if( dmpath != NULL) |
| (void)UnsetEnv((wanted==32)?"LD_LIBRARY_PATH_32":"LD_LIBRARY_PATH_64"); |
| #endif |
| |
| newenvp = environ; |
| |
| { |
| char *newexec = execname; |
| #ifdef DUAL_MODE |
| /* |
| * If the data model is being changed, the path to the |
| * executable must be updated accordingly; the executable name |
| * and directory the executable resides in are separate. In the |
| * case of 32 => 64, the new bits are assumed to reside in, e.g. |
| * "olddir/BIGARCH/execname"; in the case of 64 => 32, |
| * the bits are assumed to be in "olddir/../execname". For example, |
| * |
| * olddir/sparcv9/execname |
| * olddir/amd64/execname |
| * |
| * for Solaris SPARC and Linux amd64, respectively. |
| */ |
| |
| if (running != wanted) { |
| char *oldexec = strcpy(MemAlloc(strlen(execname) + 1), execname); |
| char *olddir = oldexec; |
| char *oldbase = strrchr(oldexec, '/'); |
| |
| |
| newexec = MemAlloc(strlen(execname) + 20); |
| *oldbase++ = 0; |
| sprintf(newexec, "%s/%s/%s", olddir, |
| ((wanted==64) ? BIG_ARCH : ".."), oldbase); |
| argv[0] = newexec; |
| } |
| #endif |
| |
| execve(newexec, argv, newenvp); |
| perror("execve()"); |
| |
| fprintf(stderr, "Error trying to exec %s.\n", newexec); |
| fprintf(stderr, "Check if file exists and permissions are set correctly.\n"); |
| |
| #ifdef DUAL_MODE |
| if (running != wanted) { |
| fprintf(stderr, "Failed to start a %d-bit JVM process from a %d-bit JVM.\n", |
| wanted, running); |
| # ifdef __sun |
| |
| # ifdef __sparc |
| fprintf(stderr, "Verify all necessary J2SE components have been installed.\n" ); |
| fprintf(stderr, |
| "(Solaris SPARC 64-bit components must be installed after 32-bit components.)\n" ); |
| # else |
| fprintf(stderr, "Either 64-bit processes are not supported by this platform\n"); |
| fprintf(stderr, "or the 64-bit components have not been installed.\n"); |
| # endif |
| } |
| # endif |
| #endif |
| |
| } |
| |
| exit(1); |
| } |
| |
| #else /* ifndef GAMMA */ |
| |
| /* gamma launcher is simpler in that it doesn't handle VM flavors, data */ |
| /* model, LD_LIBRARY_PATH, etc. Assuming everything is set-up correctly */ |
| /* all we need to do here is to return correct path names. See also */ |
| /* GetJVMPath() and GetApplicationHome(). */ |
| |
| { char *arch = (char *)GetArch(); /* like sparc or sparcv9 */ |
| char *p; |
| |
| if (!GetJREPath(jrepath, so_jrepath, arch, JNI_FALSE) ) { |
| fprintf(stderr, "Error: could not find Java 2 Runtime Environment.\n"); |
| exit(2); |
| } |
| |
| if (!GetJVMPath(jrepath, NULL, jvmpath, so_jvmpath, arch )) { |
| fprintf(stderr, "Error: no JVM at `%s'.\n", jvmpath); |
| exit(4); |
| } |
| } |
| |
| #endif /* ifndef GAMMA */ |
| } |
| |
| |
| /* |
| * On Solaris VM choosing is done by the launcher (java.c). |
| */ |
| static jboolean |
| GetJVMPath(const char *jrepath, const char *jvmtype, |
| char *jvmpath, jint jvmpathsize, char * arch) |
| { |
| struct stat s; |
| |
| #ifndef GAMMA |
| if (strchr(jvmtype, '/')) { |
| sprintf(jvmpath, "%s/" JVM_DLL, jvmtype); |
| } else { |
| sprintf(jvmpath, "%s/lib/%s/%s/" JVM_DLL, jrepath, arch, jvmtype); |
| } |
| #else |
| /* For gamma launcher, JVM is either built-in or in the same directory. */ |
| /* Either way we return "<exe_path>/libjvm.so" where <exe_path> is the */ |
| /* directory where gamma launcher is located. */ |
| |
| char *p; |
| |
| snprintf(jvmpath, jvmpathsize, "%s", GetExecname()); |
| p = strrchr(jvmpath, '/'); |
| if (p) { |
| /* replace executable name with libjvm.so */ |
| snprintf(p + 1, jvmpathsize - (p + 1 - jvmpath), "%s", JVM_DLL); |
| } else { |
| /* this case shouldn't happen */ |
| snprintf(jvmpath, jvmpathsize, "%s", JVM_DLL); |
| } |
| #endif |
| |
| if (_launcher_debug) |
| printf("Does `%s' exist ... ", jvmpath); |
| |
| if (stat(jvmpath, &s) == 0) { |
| if (_launcher_debug) |
| printf("yes.\n"); |
| return JNI_TRUE; |
| } else { |
| if (_launcher_debug) |
| printf("no.\n"); |
| return JNI_FALSE; |
| } |
| } |
| |
| /* |
| * Find path to JRE based on .exe's location or registry settings. |
| */ |
| static jboolean |
| GetJREPath(char *path, jint pathsize, char * arch, jboolean speculative) |
| { |
| char libjava[MAXPATHLEN]; |
| |
| if (GetApplicationHome(path, pathsize)) { |
| /* Is JRE co-located with the application? */ |
| sprintf(libjava, "%s/lib/%s/" JAVA_DLL, path, arch); |
| if (access(libjava, F_OK) == 0) { |
| goto found; |
| } |
| |
| /* Does the app ship a private JRE in <apphome>/jre directory? */ |
| sprintf(libjava, "%s/jre/lib/%s/" JAVA_DLL, path, arch); |
| if (access(libjava, F_OK) == 0) { |
| strcat(path, "/jre"); |
| goto found; |
| } |
| } |
| |
| if (!speculative) |
| fprintf(stderr, "Error: could not find " JAVA_DLL "\n"); |
| return JNI_FALSE; |
| |
| found: |
| if (_launcher_debug) |
| printf("JRE path is %s\n", path); |
| return JNI_TRUE; |
| } |
| |
| jboolean |
| LoadJavaVM(const char *jvmpath, InvocationFunctions *ifn) |
| { |
| #ifdef GAMMA |
| /* JVM is directly linked with gamma launcher; no dlopen() */ |
| ifn->CreateJavaVM = JNI_CreateJavaVM; |
| ifn->GetDefaultJavaVMInitArgs = JNI_GetDefaultJavaVMInitArgs; |
| return JNI_TRUE; |
| #else |
| Dl_info dlinfo; |
| void *libjvm; |
| |
| if (_launcher_debug) { |
| printf("JVM path is %s\n", jvmpath); |
| } |
| |
| libjvm = dlopen(jvmpath, RTLD_NOW + RTLD_GLOBAL); |
| if (libjvm == NULL) { |
| #if defined(__sparc) && !defined(_LP64) /* i.e. 32-bit sparc */ |
| FILE * fp; |
| Elf32_Ehdr elf_head; |
| int count; |
| int location; |
| |
| fp = fopen(jvmpath, "r"); |
| if(fp == NULL) |
| goto error; |
| |
| /* read in elf header */ |
| count = fread((void*)(&elf_head), sizeof(Elf32_Ehdr), 1, fp); |
| fclose(fp); |
| if(count < 1) |
| goto error; |
| |
| /* |
| * Check for running a server vm (compiled with -xarch=v8plus) |
| * on a stock v8 processor. In this case, the machine type in |
| * the elf header would not be included the architecture list |
| * provided by the isalist command, which is turn is gotten from |
| * sysinfo. This case cannot occur on 64-bit hardware and thus |
| * does not have to be checked for in binaries with an LP64 data |
| * model. |
| */ |
| if(elf_head.e_machine == EM_SPARC32PLUS) { |
| char buf[257]; /* recommended buffer size from sysinfo man |
| page */ |
| long length; |
| char* location; |
| |
| length = sysinfo(SI_ISALIST, buf, 257); |
| if(length > 0) { |
| location = strstr(buf, "sparcv8plus "); |
| if(location == NULL) { |
| fprintf(stderr, "SPARC V8 processor detected; Server compiler requires V9 or better.\n"); |
| fprintf(stderr, "Use Client compiler on V8 processors.\n"); |
| fprintf(stderr, "Could not create the Java virtual machine.\n"); |
| return JNI_FALSE; |
| } |
| } |
| } |
| #endif |
| fprintf(stderr, "dl failure on line %d", __LINE__); |
| goto error; |
| } |
| |
| ifn->CreateJavaVM = (CreateJavaVM_t) |
| dlsym(libjvm, "JNI_CreateJavaVM"); |
| if (ifn->CreateJavaVM == NULL) |
| goto error; |
| |
| ifn->GetDefaultJavaVMInitArgs = (GetDefaultJavaVMInitArgs_t) |
| dlsym(libjvm, "JNI_GetDefaultJavaVMInitArgs"); |
| if (ifn->GetDefaultJavaVMInitArgs == NULL) |
| goto error; |
| |
| return JNI_TRUE; |
| |
| error: |
| fprintf(stderr, "Error: failed %s, because %s\n", jvmpath, dlerror()); |
| return JNI_FALSE; |
| #endif /* GAMMA */ |
| } |
| |
| /* |
| * Get the path to the file that has the usage message for -X options. |
| */ |
| void |
| GetXUsagePath(char *buf, jint bufsize) |
| { |
| static const char Xusage_txt[] = "/Xusage.txt"; |
| Dl_info dlinfo; |
| |
| /* we use RTLD_NOW because of problems with ld.so.1 and green threads */ |
| dladdr(dlsym(dlopen(JVM_DLL, RTLD_NOW), "JNI_CreateJavaVM"), &dlinfo); |
| strncpy(buf, (char *)dlinfo.dli_fname, bufsize - sizeof(Xusage_txt)); |
| |
| buf[bufsize-1] = '\0'; |
| strcpy(strrchr(buf, '/'), Xusage_txt); |
| } |
| |
| /* |
| * If app is "/foo/bin/javac", or "/foo/bin/sparcv9/javac" then put |
| * "/foo" into buf. |
| */ |
| jboolean |
| GetApplicationHome(char *buf, jint bufsize) |
| { |
| #ifdef __linux__ |
| char *execname = GetExecname(); |
| if (execname) { |
| strncpy(buf, execname, bufsize-1); |
| buf[bufsize-1] = '\0'; |
| } else { |
| return JNI_FALSE; |
| } |
| #else |
| Dl_info dlinfo; |
| |
| dladdr((void *)GetApplicationHome, &dlinfo); |
| if (realpath(dlinfo.dli_fname, buf) == NULL) { |
| fprintf(stderr, "Error: realpath(`%s') failed.\n", dlinfo.dli_fname); |
| return JNI_FALSE; |
| } |
| #endif |
| |
| #ifdef GAMMA |
| { |
| /* gamma launcher uses JAVA_HOME environment variable to find JDK/JRE */ |
| char* java_home_var = getenv("JAVA_HOME"); |
| if (java_home_var == NULL) { |
| printf("JAVA_HOME must point to a valid JDK/JRE to run gamma\n"); |
| return JNI_FALSE; |
| } |
| snprintf(buf, bufsize, "%s", java_home_var); |
| } |
| #else |
| if (strrchr(buf, '/') == 0) { |
| buf[0] = '\0'; |
| return JNI_FALSE; |
| } |
| *(strrchr(buf, '/')) = '\0'; /* executable file */ |
| if (strlen(buf) < 4 || strrchr(buf, '/') == 0) { |
| buf[0] = '\0'; |
| return JNI_FALSE; |
| } |
| if (strcmp("/bin", buf + strlen(buf) - 4) != 0) |
| *(strrchr(buf, '/')) = '\0'; /* sparcv9 or amd64 */ |
| if (strlen(buf) < 4 || strcmp("/bin", buf + strlen(buf) - 4) != 0) { |
| buf[0] = '\0'; |
| return JNI_FALSE; |
| } |
| *(strrchr(buf, '/')) = '\0'; /* bin */ |
| #endif /* GAMMA */ |
| |
| return JNI_TRUE; |
| } |
| |
| |
| /* |
| * Return true if the named program exists |
| */ |
| static int |
| ProgramExists(char *name) |
| { |
| struct stat sb; |
| if (stat(name, &sb) != 0) return 0; |
| if (S_ISDIR(sb.st_mode)) return 0; |
| return (sb.st_mode & S_IEXEC) != 0; |
| } |
| |
| |
| /* |
| * Find a command in a directory, returning the path. |
| */ |
| static char * |
| Resolve(char *indir, char *cmd) |
| { |
| char name[PATH_MAX + 2], *real; |
| |
| if ((strlen(indir) + strlen(cmd) + 1) > PATH_MAX) return 0; |
| sprintf(name, "%s%c%s", indir, FILE_SEPARATOR, cmd); |
| if (!ProgramExists(name)) return 0; |
| real = MemAlloc(PATH_MAX + 2); |
| if (!realpath(name, real)) |
| strcpy(real, name); |
| return real; |
| } |
| |
| |
| /* |
| * Find a path for the executable |
| */ |
| static char * |
| FindExecName(char *program) |
| { |
| char cwdbuf[PATH_MAX+2]; |
| char *path; |
| char *tmp_path; |
| char *f; |
| char *result = NULL; |
| |
| /* absolute path? */ |
| if (*program == FILE_SEPARATOR || |
| (FILE_SEPARATOR=='\\' && strrchr(program, ':'))) |
| return Resolve("", program+1); |
| |
| /* relative path? */ |
| if (strrchr(program, FILE_SEPARATOR) != 0) { |
| char buf[PATH_MAX+2]; |
| return Resolve(getcwd(cwdbuf, sizeof(cwdbuf)), program); |
| } |
| |
| /* from search path? */ |
| path = getenv("PATH"); |
| if (!path || !*path) path = "."; |
| tmp_path = MemAlloc(strlen(path) + 2); |
| strcpy(tmp_path, path); |
| |
| for (f=tmp_path; *f && result==0; ) { |
| char *s = f; |
| while (*f && (*f != PATH_SEPARATOR)) ++f; |
| if (*f) *f++ = 0; |
| if (*s == FILE_SEPARATOR) |
| result = Resolve(s, program); |
| else { |
| /* relative path element */ |
| char dir[2*PATH_MAX]; |
| sprintf(dir, "%s%c%s", getcwd(cwdbuf, sizeof(cwdbuf)), |
| FILE_SEPARATOR, s); |
| result = Resolve(dir, program); |
| } |
| if (result != 0) break; |
| } |
| |
| free(tmp_path); |
| return result; |
| } |
| |
| |
| /* Store the name of the executable once computed */ |
| static char *execname = NULL; |
| |
| /* |
| * Compute the name of the executable |
| * |
| * In order to re-exec securely we need the absolute path of the |
| * executable. On Solaris getexecname(3c) may not return an absolute |
| * path so we use dladdr to get the filename of the executable and |
| * then use realpath to derive an absolute path. From Solaris 9 |
| * onwards the filename returned in DL_info structure from dladdr is |
| * an absolute pathname so technically realpath isn't required. |
| * On Linux we read the executable name from /proc/self/exe. |
| * As a fallback, and for platforms other than Solaris and Linux, |
| * we use FindExecName to compute the executable name. |
| */ |
| static char * |
| SetExecname(char **argv) |
| { |
| char* exec_path = NULL; |
| |
| if (execname != NULL) /* Already determined */ |
| return (execname); |
| |
| #if defined(__sun) |
| { |
| Dl_info dlinfo; |
| if (dladdr((void*)&SetExecname, &dlinfo)) { |
| char *resolved = (char*)MemAlloc(PATH_MAX+1); |
| if (resolved != NULL) { |
| exec_path = realpath(dlinfo.dli_fname, resolved); |
| if (exec_path == NULL) { |
| free(resolved); |
| } |
| } |
| } |
| } |
| #elif defined(__linux__) |
| { |
| const char* self = "/proc/self/exe"; |
| char buf[PATH_MAX+1]; |
| int len = readlink(self, buf, PATH_MAX); |
| if (len >= 0) { |
| buf[len] = '\0'; /* readlink doesn't nul terminate */ |
| exec_path = strdup(buf); |
| } |
| } |
| #else /* !__sun && !__linux */ |
| { |
| /* Not implemented */ |
| } |
| #endif |
| |
| if (exec_path == NULL) { |
| exec_path = FindExecName(argv[0]); |
| } |
| execname = exec_path; |
| return exec_path; |
| } |
| |
| /* |
| * Return the name of the executable. Used in java_md.c to find the JRE area. |
| */ |
| static char * |
| GetExecname() { |
| return execname; |
| } |
| |
| void ReportErrorMessage(char * message, jboolean always) { |
| if (always) { |
| fprintf(stderr, "%s\n", message); |
| } |
| } |
| |
| void ReportErrorMessage2(char * format, char * string, jboolean always) { |
| if (always) { |
| fprintf(stderr, format, string); |
| fprintf(stderr, "\n"); |
| } |
| } |
| |
| void ReportExceptionDescription(JNIEnv * env) { |
| (*env)->ExceptionDescribe(env); |
| } |
| |
| /* |
| * Return JNI_TRUE for an option string that has no effect but should |
| * _not_ be passed on to the vm; return JNI_FALSE otherwise. On |
| * Solaris SPARC, this screening needs to be done if: |
| * 1) LD_LIBRARY_PATH does _not_ need to be reset and |
| * 2) -d32 or -d64 is passed to a binary with a matching data model |
| * (the exec in SetLibraryPath removes -d<n> options and points the |
| * exec to the proper binary). When this exec is not done, these options |
| * would end up getting passed onto the vm. |
| */ |
| jboolean RemovableMachineDependentOption(char * option) { |
| /* |
| * Unconditionally remove both -d32 and -d64 options since only |
| * the last such options has an effect; e.g. |
| * java -d32 -d64 -d32 -version |
| * is equivalent to |
| * java -d32 -version |
| */ |
| |
| if( (strcmp(option, "-d32") == 0 ) || |
| (strcmp(option, "-d64") == 0 )) |
| return JNI_TRUE; |
| else |
| return JNI_FALSE; |
| } |
| |
| void PrintMachineDependentOptions() { |
| fprintf(stdout, |
| " -d32 use a 32-bit data model if available\n" |
| "\n" |
| " -d64 use a 64-bit data model if available\n"); |
| return; |
| } |
| |
| #ifndef GAMMA /* gamma launcher does not have ergonomics */ |
| |
| /* |
| * The following methods (down to ServerClassMachine()) answer |
| * the question about whether a machine is a "server-class" |
| * machine. A server-class machine is loosely defined as one |
| * with 2 or more processors and 2 gigabytes or more physical |
| * memory. The definition of a processor is a physical package, |
| * not a hyperthreaded chip masquerading as a multi-processor. |
| * The definition of memory is also somewhat fuzzy, since x86 |
| * machines seem not to report all the memory in their DIMMs, we |
| * think because of memory mapping of graphics cards, etc. |
| * |
| * This code is somewhat more confused with #ifdef's than we'd |
| * like because this file is used by both Solaris and Linux |
| * platforms, and so needs to be parameterized for SPARC and |
| * i586 hardware. The other Linux platforms (amd64 and ia64) |
| * don't even ask this question, because they only come with |
| * server JVMs. */ |
| |
| # define KB (1024UL) |
| # define MB (1024UL * KB) |
| # define GB (1024UL * MB) |
| |
| /* Compute physical memory by asking the OS */ |
| uint64_t |
| physical_memory(void) { |
| const uint64_t pages = (uint64_t) sysconf(_SC_PHYS_PAGES); |
| const uint64_t page_size = (uint64_t) sysconf(_SC_PAGESIZE); |
| const uint64_t result = pages * page_size; |
| # define UINT64_FORMAT "%" PRIu64 |
| |
| if (_launcher_debug) { |
| printf("pages: " UINT64_FORMAT |
| " page_size: " UINT64_FORMAT |
| " physical memory: " UINT64_FORMAT " (%.3fGB)\n", |
| pages, page_size, result, result / (double) GB); |
| } |
| return result; |
| } |
| |
| #if defined(__sun) && defined(__sparc) |
| |
| /* Methods for solaris-sparc: these are easy. */ |
| |
| /* Ask the OS how many processors there are. */ |
| unsigned long |
| physical_processors(void) { |
| const unsigned long sys_processors = sysconf(_SC_NPROCESSORS_CONF); |
| |
| if (_launcher_debug) { |
| printf("sysconf(_SC_NPROCESSORS_CONF): %lu\n", sys_processors); |
| } |
| return sys_processors; |
| } |
| |
| /* The solaris-sparc version of the "server-class" predicate. */ |
| jboolean |
| solaris_sparc_ServerClassMachine(void) { |
| jboolean result = JNI_FALSE; |
| /* How big is a server class machine? */ |
| const unsigned long server_processors = 2UL; |
| const uint64_t server_memory = 2UL * GB; |
| const uint64_t actual_memory = physical_memory(); |
| |
| /* Is this a server class machine? */ |
| if (actual_memory >= server_memory) { |
| const unsigned long actual_processors = physical_processors(); |
| if (actual_processors >= server_processors) { |
| result = JNI_TRUE; |
| } |
| } |
| if (_launcher_debug) { |
| printf("solaris_" ARCH "_ServerClassMachine: %s\n", |
| (result == JNI_TRUE ? "JNI_TRUE" : "JNI_FALSE")); |
| } |
| return result; |
| } |
| |
| #endif /* __sun && __sparc */ |
| |
| #if defined(__sun) && defined(i586) |
| |
| /* |
| * A utility method for asking the CPU about itself. |
| * There's a corresponding version of linux-i586 |
| * because the compilers are different. |
| */ |
| void |
| get_cpuid(uint32_t arg, |
| uint32_t* eaxp, |
| uint32_t* ebxp, |
| uint32_t* ecxp, |
| uint32_t* edxp) { |
| #ifdef _LP64 |
| asm( |
| /* rbx is a callee-saved register */ |
| " movq %rbx, %r11 \n" |
| /* rdx and rcx are 3rd and 4th argument registers */ |
| " movq %rdx, %r10 \n" |
| " movq %rcx, %r9 \n" |
| " movl %edi, %eax \n" |
| " cpuid \n" |
| " movl %eax, (%rsi)\n" |
| " movl %ebx, (%r10)\n" |
| " movl %ecx, (%r9) \n" |
| " movl %edx, (%r8) \n" |
| /* Restore rbx */ |
| " movq %r11, %rbx"); |
| #else |
| /* EBX is a callee-saved register */ |
| asm(" pushl %ebx"); |
| /* Need ESI for storing through arguments */ |
| asm(" pushl %esi"); |
| asm(" movl 8(%ebp), %eax \n" |
| " cpuid \n" |
| " movl 12(%ebp), %esi \n" |
| " movl %eax, (%esi) \n" |
| " movl 16(%ebp), %esi \n" |
| " movl %ebx, (%esi) \n" |
| " movl 20(%ebp), %esi \n" |
| " movl %ecx, (%esi) \n" |
| " movl 24(%ebp), %esi \n" |
| " movl %edx, (%esi) "); |
| /* Restore ESI and EBX */ |
| asm(" popl %esi"); |
| /* Restore EBX */ |
| asm(" popl %ebx"); |
| #endif |
| } |
| |
| #endif /* __sun && i586 */ |
| |
| #if defined(__linux__) && defined(i586) |
| |
| /* |
| * A utility method for asking the CPU about itself. |
| * There's a corresponding version of solaris-i586 |
| * because the compilers are different. |
| */ |
| void |
| get_cpuid(uint32_t arg, |
| uint32_t* eaxp, |
| uint32_t* ebxp, |
| uint32_t* ecxp, |
| uint32_t* edxp) { |
| #ifdef _LP64 |
| __asm__ volatile (/* Instructions */ |
| " movl %4, %%eax \n" |
| " cpuid \n" |
| " movl %%eax, (%0)\n" |
| " movl %%ebx, (%1)\n" |
| " movl %%ecx, (%2)\n" |
| " movl %%edx, (%3)\n" |
| : /* Outputs */ |
| : /* Inputs */ |
| "r" (eaxp), |
| "r" (ebxp), |
| "r" (ecxp), |
| "r" (edxp), |
| "r" (arg) |
| : /* Clobbers */ |
| "%rax", "%rbx", "%rcx", "%rdx", "memory" |
| ); |
| #else |
| uint32_t value_of_eax = 0; |
| uint32_t value_of_ebx = 0; |
| uint32_t value_of_ecx = 0; |
| uint32_t value_of_edx = 0; |
| __asm__ volatile (/* Instructions */ |
| /* ebx is callee-save, so push it */ |
| /* even though it's in the clobbers section */ |
| " pushl %%ebx \n" |
| " movl %4, %%eax \n" |
| " cpuid \n" |
| " movl %%eax, %0 \n" |
| " movl %%ebx, %1 \n" |
| " movl %%ecx, %2 \n" |
| " movl %%edx, %3 \n" |
| /* restore ebx */ |
| " popl %%ebx \n" |
| |
| : /* Outputs */ |
| "=m" (value_of_eax), |
| "=m" (value_of_ebx), |
| "=m" (value_of_ecx), |
| "=m" (value_of_edx) |
| : /* Inputs */ |
| "m" (arg) |
| : /* Clobbers */ |
| "%eax", "%ebx", "%ecx", "%edx" |
| ); |
| *eaxp = value_of_eax; |
| *ebxp = value_of_ebx; |
| *ecxp = value_of_ecx; |
| *edxp = value_of_edx; |
| #endif |
| } |
| |
| #endif /* __linux__ && i586 */ |
| |
| #ifdef i586 |
| /* |
| * Routines shared by solaris-i586 and linux-i586. |
| */ |
| |
| enum HyperThreadingSupport_enum { |
| hts_supported = 1, |
| hts_too_soon_to_tell = 0, |
| hts_not_supported = -1, |
| hts_not_pentium4 = -2, |
| hts_not_intel = -3 |
| }; |
| typedef enum HyperThreadingSupport_enum HyperThreadingSupport; |
| |
| /* Determine if hyperthreading is supported */ |
| HyperThreadingSupport |
| hyperthreading_support(void) { |
| HyperThreadingSupport result = hts_too_soon_to_tell; |
| /* Bits 11 through 8 is family processor id */ |
| # define FAMILY_ID_SHIFT 8 |
| # define FAMILY_ID_MASK 0xf |
| /* Bits 23 through 20 is extended family processor id */ |
| # define EXT_FAMILY_ID_SHIFT 20 |
| # define EXT_FAMILY_ID_MASK 0xf |
| /* Pentium 4 family processor id */ |
| # define PENTIUM4_FAMILY_ID 0xf |
| /* Bit 28 indicates Hyper-Threading Technology support */ |
| # define HT_BIT_SHIFT 28 |
| # define HT_BIT_MASK 1 |
| uint32_t vendor_id[3] = { 0U, 0U, 0U }; |
| uint32_t value_of_eax = 0U; |
| uint32_t value_of_edx = 0U; |
| uint32_t dummy = 0U; |
| |
| /* Yes, this is supposed to be [0], [2], [1] */ |
| get_cpuid(0, &dummy, &vendor_id[0], &vendor_id[2], &vendor_id[1]); |
| if (_launcher_debug) { |
| printf("vendor: %c %c %c %c %c %c %c %c %c %c %c %c \n", |
| ((vendor_id[0] >> 0) & 0xff), |
| ((vendor_id[0] >> 8) & 0xff), |
| ((vendor_id[0] >> 16) & 0xff), |
| ((vendor_id[0] >> 24) & 0xff), |
| ((vendor_id[1] >> 0) & 0xff), |
| ((vendor_id[1] >> 8) & 0xff), |
| ((vendor_id[1] >> 16) & 0xff), |
| ((vendor_id[1] >> 24) & 0xff), |
| ((vendor_id[2] >> 0) & 0xff), |
| ((vendor_id[2] >> 8) & 0xff), |
| ((vendor_id[2] >> 16) & 0xff), |
| ((vendor_id[2] >> 24) & 0xff)); |
| } |
| get_cpuid(1, &value_of_eax, &dummy, &dummy, &value_of_edx); |
| if (_launcher_debug) { |
| printf("value_of_eax: 0x%x value_of_edx: 0x%x\n", |
| value_of_eax, value_of_edx); |
| } |
| if ((((value_of_eax >> FAMILY_ID_SHIFT) & FAMILY_ID_MASK) == PENTIUM4_FAMILY_ID) || |
| (((value_of_eax >> EXT_FAMILY_ID_SHIFT) & EXT_FAMILY_ID_MASK) != 0)) { |
| if ((((vendor_id[0] >> 0) & 0xff) == 'G') && |
| (((vendor_id[0] >> 8) & 0xff) == 'e') && |
| (((vendor_id[0] >> 16) & 0xff) == 'n') && |
| (((vendor_id[0] >> 24) & 0xff) == 'u') && |
| (((vendor_id[1] >> 0) & 0xff) == 'i') && |
| (((vendor_id[1] >> 8) & 0xff) == 'n') && |
| (((vendor_id[1] >> 16) & 0xff) == 'e') && |
| (((vendor_id[1] >> 24) & 0xff) == 'I') && |
| (((vendor_id[2] >> 0) & 0xff) == 'n') && |
| (((vendor_id[2] >> 8) & 0xff) == 't') && |
| (((vendor_id[2] >> 16) & 0xff) == 'e') && |
| (((vendor_id[2] >> 24) & 0xff) == 'l')) { |
| if (((value_of_edx >> HT_BIT_SHIFT) & HT_BIT_MASK) == HT_BIT_MASK) { |
| if (_launcher_debug) { |
| printf("Hyperthreading supported\n"); |
| } |
| result = hts_supported; |
| } else { |
| if (_launcher_debug) { |
| printf("Hyperthreading not supported\n"); |
| } |
| result = hts_not_supported; |
| } |
| } else { |
| if (_launcher_debug) { |
| printf("Not GenuineIntel\n"); |
| } |
| result = hts_not_intel; |
| } |
| } else { |
| if (_launcher_debug) { |
| printf("not Pentium 4 or extended\n"); |
| } |
| result = hts_not_pentium4; |
| } |
| return result; |
| } |
| |
| /* Determine how many logical processors there are per CPU */ |
| unsigned int |
| logical_processors_per_package(void) { |
| /* |
| * After CPUID with EAX==1, register EBX bits 23 through 16 |
| * indicate the number of logical processors per package |
| */ |
| # define NUM_LOGICAL_SHIFT 16 |
| # define NUM_LOGICAL_MASK 0xff |
| unsigned int result = 1U; |
| const HyperThreadingSupport hyperthreading = hyperthreading_support(); |
| |
| if (hyperthreading == hts_supported) { |
| uint32_t value_of_ebx = 0U; |
| uint32_t dummy = 0U; |
| |
| get_cpuid(1, &dummy, &value_of_ebx, &dummy, &dummy); |
| result = (value_of_ebx >> NUM_LOGICAL_SHIFT) & NUM_LOGICAL_MASK; |
| if (_launcher_debug) { |
| printf("logical processors per package: %u\n", result); |
| } |
| } |
| return result; |
| } |
| |
| /* Compute the number of physical processors, not logical processors */ |
| unsigned long |
| physical_processors(void) { |
| const long sys_processors = sysconf(_SC_NPROCESSORS_CONF); |
| unsigned long result = sys_processors; |
| |
| if (_launcher_debug) { |
| printf("sysconf(_SC_NPROCESSORS_CONF): %lu\n", sys_processors); |
| } |
| if (sys_processors > 1) { |
| unsigned int logical_processors = logical_processors_per_package(); |
| if (logical_processors > 1) { |
| result = (unsigned long) sys_processors / logical_processors; |
| } |
| } |
| if (_launcher_debug) { |
| printf("physical processors: %lu\n", result); |
| } |
| return result; |
| } |
| |
| #endif /* i586 */ |
| |
| #if defined(__sun) && defined(i586) |
| |
| /* The definition of a server-class machine for solaris-i586/amd64 */ |
| jboolean |
| solaris_i586_ServerClassMachine(void) { |
| jboolean result = JNI_FALSE; |
| /* How big is a server class machine? */ |
| const unsigned long server_processors = 2UL; |
| const uint64_t server_memory = 2UL * GB; |
| /* |
| * We seem not to get our full complement of memory. |
| * We allow some part (1/8?) of the memory to be "missing", |
| * based on the sizes of DIMMs, and maybe graphics cards. |
| */ |
| const uint64_t missing_memory = 256UL * MB; |
| const uint64_t actual_memory = physical_memory(); |
| |
| /* Is this a server class machine? */ |
| if (actual_memory >= (server_memory - missing_memory)) { |
| const unsigned long actual_processors = physical_processors(); |
| if (actual_processors >= server_processors) { |
| result = JNI_TRUE; |
| } |
| } |
| if (_launcher_debug) { |
| printf("solaris_" ARCH "_ServerClassMachine: %s\n", |
| (result == JNI_TRUE ? "true" : "false")); |
| } |
| return result; |
| } |
| |
| #endif /* __sun && i586 */ |
| |
| #if defined(__linux__) && defined(i586) |
| |
| /* The definition of a server-class machine for linux-i586 */ |
| jboolean |
| linux_i586_ServerClassMachine(void) { |
| jboolean result = JNI_FALSE; |
| /* How big is a server class machine? */ |
| const unsigned long server_processors = 2UL; |
| const uint64_t server_memory = 2UL * GB; |
| /* |
| * We seem not to get our full complement of memory. |
| * We allow some part (1/8?) of the memory to be "missing", |
| * based on the sizes of DIMMs, and maybe graphics cards. |
| */ |
| const uint64_t missing_memory = 256UL * MB; |
| const uint64_t actual_memory = physical_memory(); |
| |
| /* Is this a server class machine? */ |
| if (actual_memory >= (server_memory - missing_memory)) { |
| const unsigned long actual_processors = physical_processors(); |
| if (actual_processors >= server_processors) { |
| result = JNI_TRUE; |
| } |
| } |
| if (_launcher_debug) { |
| printf("linux_" ARCH "_ServerClassMachine: %s\n", |
| (result == JNI_TRUE ? "true" : "false")); |
| } |
| return result; |
| } |
| |
| #endif /* __linux__ && i586 */ |
| |
| /* Dispatch to the platform-specific definition of "server-class" */ |
| jboolean |
| ServerClassMachine(void) { |
| jboolean result = JNI_FALSE; |
| #if defined(__sun) && defined(__sparc) |
| result = solaris_sparc_ServerClassMachine(); |
| #elif defined(__sun) && defined(i586) |
| result = solaris_i586_ServerClassMachine(); |
| #elif defined(__linux__) && defined(i586) |
| result = linux_i586_ServerClassMachine(); |
| #else |
| if (_launcher_debug) { |
| printf("ServerClassMachine: returns default value of %s\n", |
| (result == JNI_TRUE ? "true" : "false")); |
| } |
| #endif |
| return result; |
| } |
| |
| #endif /* ifndef GAMMA */ |
| |
| #ifndef GAMMA /* gamma launcher does not choose JDK/JRE/JVM */ |
| |
| /* |
| * Since using the file system as a registry is a bit risky, perform |
| * additional sanity checks on the identified directory to validate |
| * it as a valid jre/sdk. |
| * |
| * Return 0 if the tests fail; otherwise return non-zero (true). |
| * |
| * Note that checking for anything more than the existence of an |
| * executable object at bin/java relative to the path being checked |
| * will break the regression tests. |
| */ |
| static int |
| CheckSanity(char *path, char *dir) |
| { |
| char buffer[PATH_MAX]; |
| |
| if (strlen(path) + strlen(dir) + 11 > PATH_MAX) |
| return (0); /* Silently reject "impossibly" long paths */ |
| |
| (void)strcat(strcat(strcat(strcpy(buffer, path), "/"), dir), "/bin/java"); |
| return ((access(buffer, X_OK) == 0) ? 1 : 0); |
| } |
| |
| /* |
| * Determine if there is an acceptable JRE in the directory dirname. |
| * Upon locating the "best" one, return a fully qualified path to |
| * it. "Best" is defined as the most advanced JRE meeting the |
| * constraints contained in the manifest_info. If no JRE in this |
| * directory meets the constraints, return NULL. |
| * |
| * Note that we don't check for errors in reading the directory |
| * (which would be done by checking errno). This is because it |
| * doesn't matter if we get an error reading the directory, or |
| * we just don't find anything interesting in the directory. We |
| * just return NULL in either case. |
| * |
| * The historical names of j2sdk and j2re were changed to jdk and |
| * jre respecively as part of the 1.5 rebranding effort. Since the |
| * former names are legacy on Linux, they must be recognized for |
| * all time. Fortunately, this is a minor cost. |
| */ |
| static char |
| *ProcessDir(manifest_info *info, char *dirname) |
| { |
| DIR *dirp; |
| struct dirent *dp; |
| char *best = NULL; |
| int offset; |
| int best_offset = 0; |
| char *ret_str = NULL; |
| char buffer[PATH_MAX]; |
| |
| if ((dirp = opendir(dirname)) == NULL) |
| return (NULL); |
| |
| do { |
| if ((dp = readdir(dirp)) != NULL) { |
| offset = 0; |
| if ((strncmp(dp->d_name, "jre", 3) == 0) || |
| (strncmp(dp->d_name, "jdk", 3) == 0)) |
| offset = 3; |
| else if (strncmp(dp->d_name, "j2re", 4) == 0) |
| offset = 4; |
| else if (strncmp(dp->d_name, "j2sdk", 5) == 0) |
| offset = 5; |
| if (offset > 0) { |
| if ((acceptable_release(dp->d_name + offset, |
| info->jre_version)) && CheckSanity(dirname, dp->d_name)) |
| if ((best == NULL) || (exact_version_id( |
| dp->d_name + offset, best + best_offset) > 0)) { |
| if (best != NULL) |
| free(best); |
| best = strdup(dp->d_name); |
| best_offset = offset; |
| } |
| } |
| } |
| } while (dp != NULL); |
| (void) closedir(dirp); |
| if (best == NULL) |
| return (NULL); |
| else { |
| ret_str = MemAlloc(strlen(dirname) + strlen(best) + 2); |
| ret_str = strcat(strcat(strcpy(ret_str, dirname), "/"), best); |
| free(best); |
| return (ret_str); |
| } |
| } |
| |
| /* |
| * This is the global entry point. It examines the host for the optimal |
| * JRE to be used by scanning a set of directories. The set of directories |
| * is platform dependent and can be overridden by the environment |
| * variable JAVA_VERSION_PATH. |
| * |
| * This routine itself simply determines the set of appropriate |
| * directories before passing control onto ProcessDir(). |
| */ |
| char* |
| LocateJRE(manifest_info* info) |
| { |
| char *path; |
| char *home; |
| char *target = NULL; |
| char *dp; |
| char *cp; |
| |
| /* |
| * Start by getting JAVA_VERSION_PATH |
| */ |
| if (info->jre_restrict_search) |
| path = strdup(system_dir); |
| else if ((path = getenv("JAVA_VERSION_PATH")) != NULL) |
| path = strdup(path); |
| else |
| if ((home = getenv("HOME")) != NULL) { |
| path = (char *)MemAlloc(strlen(home) + 13); |
| path = strcat(strcat(strcat(strcpy(path, home), |
| user_dir), ":"), system_dir); |
| } else |
| path = strdup(system_dir); |
| |
| /* |
| * Step through each directory on the path. Terminate the scan with |
| * the first directory with an acceptable JRE. |
| */ |
| cp = dp = path; |
| while (dp != NULL) { |
| cp = strchr(dp, (int)':'); |
| if (cp != NULL) |
| *cp = (char)NULL; |
| if ((target = ProcessDir(info, dp)) != NULL) |
| break; |
| dp = cp; |
| if (dp != NULL) |
| dp++; |
| } |
| free(path); |
| return (target); |
| } |
| |
| /* |
| * Given a path to a jre to execute, this routine checks if this process |
| * is indeed that jre. If not, it exec's that jre. |
| * |
| * We want to actually check the paths rather than just the version string |
| * built into the executable, so that given version specification (and |
| * JAVA_VERSION_PATH) will yield the exact same Java environment, regardless |
| * of the version of the arbitrary launcher we start with. |
| */ |
| void |
| ExecJRE(char *jre, char **argv) |
| { |
| char wanted[PATH_MAX]; |
| char *execname; |
| char *progname; |
| |
| /* |
| * Resolve the real path to the directory containing the selected JRE. |
| */ |
| if (realpath(jre, wanted) == NULL) { |
| fprintf(stderr, "Unable to resolve %s\n", jre); |
| exit(1); |
| } |
| |
| /* |
| * Resolve the real path to the currently running launcher. |
| */ |
| execname = SetExecname(argv); |
| if (execname == NULL) { |
| fprintf(stderr, "Unable to resolve current executable\n"); |
| exit(1); |
| } |
| |
| /* |
| * If the path to the selected JRE directory is a match to the initial |
| * portion of the path to the currently executing JRE, we have a winner! |
| * If so, just return. |
| */ |
| if (strncmp(wanted, execname, strlen(wanted)) == 0) |
| return; /* I am the droid you were looking for */ |
| |
| /* |
| * If this isn't the selected version, exec the selected version. |
| */ |
| #ifdef JAVA_ARGS /* javac, jar and friends. */ |
| progname = "java"; |
| #else /* java, oldjava, javaw and friends */ |
| #ifdef PROGNAME |
| progname = PROGNAME; |
| #else |
| progname = *argv; |
| if ((s = strrchr(progname, FILE_SEPARATOR)) != 0) { |
| progname = s + 1; |
| } |
| #endif /* PROGNAME */ |
| #endif /* JAVA_ARGS */ |
| |
| /* |
| * This should never happen (because of the selection code in SelectJRE), |
| * but check for "impossibly" long path names just because buffer overruns |
| * can be so deadly. |
| */ |
| if (strlen(wanted) + strlen(progname) + 6 > PATH_MAX) { |
| fprintf(stderr, "Path length exceeds maximum length (PATH_MAX)\n"); |
| exit(1); |
| } |
| |
| /* |
| * Construct the path and exec it. |
| */ |
| (void)strcat(strcat(wanted, "/bin/"), progname); |
| argv[0] = progname; |
| if (_launcher_debug) { |
| int i; |
| printf("execv(\"%s\"", wanted); |
| for (i = 0; argv[i] != NULL; i++) |
| printf(", \"%s\"", argv[i]); |
| printf(")\n"); |
| } |
| execv(wanted, argv); |
| fprintf(stderr, "Exec of %s failed\n", wanted); |
| exit(1); |
| } |
| |
| #endif /* ifndef GAMMA */ |
| |
| /* |
| * "Borrowed" from Solaris 10 where the unsetenv() function is being added |
| * to libc thanks to SUSv3 (Standard Unix Specification, version 3). As |
| * such, in the fullness of time this will appear in libc on all relevant |
| * Solaris/Linux platforms and maybe even the Windows platform. At that |
| * time, this stub can be removed. |
| * |
| * This implementation removes the environment locking for multithreaded |
| * applications. (We don't have access to these mutexes within libc and |
| * the launcher isn't multithreaded.) Note that what remains is platform |
| * independent, because it only relies on attributes that a POSIX environment |
| * defines. |
| * |
| * Returns 0 on success, -1 on failure. |
| * |
| * Also removed was the setting of errno. The only value of errno set |
| * was EINVAL ("Invalid Argument"). |
| */ |
| |
| /* |
| * s1(environ) is name=value |
| * s2(name) is name(not the form of name=value). |
| * if names match, return value of 1, else return 0 |
| */ |
| static int |
| match_noeq(const char *s1, const char *s2) |
| { |
| while (*s1 == *s2++) { |
| if (*s1++ == '=') |
| return (1); |
| } |
| if (*s1 == '=' && s2[-1] == '\0') |
| return (1); |
| return (0); |
| } |
| |
| /* |
| * added for SUSv3 standard |
| * |
| * Delete entry from environ. |
| * Do not free() memory! Other threads may be using it. |
| * Keep it around forever. |
| */ |
| static int |
| borrowed_unsetenv(const char *name) |
| { |
| long idx; /* index into environ */ |
| |
| if (name == NULL || *name == '\0' || |
| strchr(name, '=') != NULL) { |
| return (-1); |
| } |
| |
| for (idx = 0; environ[idx] != NULL; idx++) { |
| if (match_noeq(environ[idx], name)) |
| break; |
| } |
| if (environ[idx] == NULL) { |
| /* name not found but still a success */ |
| return (0); |
| } |
| /* squeeze up one entry */ |
| do { |
| environ[idx] = environ[idx+1]; |
| } while (environ[++idx] != NULL); |
| |
| return (0); |
| } |
| /* --- End of "borrowed" code --- */ |
| |
| /* |
| * Wrapper for unsetenv() function. |
| */ |
| int |
| UnsetEnv(char *name) |
| { |
| return(borrowed_unsetenv(name)); |
| } |
