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| |
| Briefly, the tests cover the following scenarios: |
| 1. prepre |
| set signal handlers -> create JVM -> send signals -> destroy JVM -> check signal handlers were called |
| |
| 2. prepost |
| set signal handlers -> create JVM -> destroy JVM -> send signals -> check signal handlers were called |
| |
| 3. postpre |
| create JVM ->set signal handlers -> send signals -> destroy JVM -> check signal handlers were called |
| |
| 4. postpost |
| create JVM -> set signal handlers -> destroy JVM -> send signals -> check signal handlers were called |
| |
| There is one more scenario called 'nojvm'. |
| In this case no jvm is created, so pure signal testing is done. |
| |
| Signal handlers don't do anything, so the only fact that signal handler was called is checked. |
| Also 2 different ways of setting signal handlers are tested: sigaction, sigset. |
| |
| For 'postpre' and 'postpro' libjsig.so is used to chain signal handlers behind VM installed ones. |
| |
| => Current tests cover the following cases (don't count 'nojvm' scenario): |
| 1. Support for pre-installed signal handlers when the HotSpot VM is created. |
| 2. Support for signal handler installation after the HotSpot VM is created inside JNI code |
| |
| |
| Notes: |
| |
| SIGQUIT, SIGTERM, SIGINT, and SIGHUP signals cannot be chained. |
| If the application needs to handle these signals, the -Xrs option needs |
| to be specified. So, test these signals only with -Xrs flag. |
| |
| On Linux and Mac OS X, SIGUSR2 is used to implement suspend and resume. So, |
| don't test SIGUSR2 on Linux and Mac OS X. |
| |
| SIGJVM1 and SIGJVM2 exist only on Solaris and are reserved for exclusive use |
| by the JVM. So don't test SIGJVM1 and SIGJVM2. |