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| <hr><h1>oscl_error_imp_jumps.h</h1><a href="oscl__error__imp__jumps_8h.html">Go to the documentation of this file.</a><div class="fragment"><pre>00001 <span class="comment">// -*- c++ -*-</span> |
| 00002 <span class="comment">// = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = =</span> |
| 00003 |
| 00004 <span class="comment">// O S C L _ E R R O R _ I M P _ J U M P S</span> |
| 00005 |
| 00006 <span class="comment">// = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = =</span> |
| 00007 |
| 00018 <span class="preprocessor">#ifndef OSCL_ERROR_IMP_JUMPS_H_INCLUDED</span> |
| 00019 <span class="preprocessor"></span><span class="preprocessor">#define OSCL_ERROR_IMP_JUMPS_H_INCLUDED</span> |
| 00020 <span class="preprocessor"></span> |
| 00021 <span class="preprocessor">#ifndef OSCL_ERROR_TRAPCLEANUP_H_INCLUDED</span> |
| 00022 <span class="preprocessor"></span><span class="preprocessor">#include "<a class="code" href="oscl__error__trapcleanup_8h.html">oscl_error_trapcleanup.h</a>"</span> |
| 00023 <span class="preprocessor">#endif</span> |
| 00024 <span class="preprocessor"></span><span class="preprocessor">#ifndef OSCL_ASSERT_H_INCLUDED</span> |
| 00025 <span class="preprocessor"></span><span class="preprocessor">#include "<a class="code" href="oscl__assert_8h.html">oscl_assert.h</a>"</span> |
| 00026 <span class="preprocessor">#endif</span> |
| 00027 <span class="preprocessor"></span> |
| 00028 <span class="comment">// Implemenation of Leave using Setjmp / Longjmp.</span> |
| 00029 |
| 00030 <span class="comment">//ANSI setjmp/longjmp implementation. This is needed on any OS</span> |
| 00031 <span class="comment">//that does not support C++ exceptions. This is a complete implementation.</span> |
| 00032 |
| 00033 <span class="preprocessor">#ifndef OSCLCONFIG_ERROR_H_INCLUDED</span> |
| 00034 <span class="preprocessor"></span><span class="preprocessor">#include "<a class="code" href="osclconfig__error_8h.html">osclconfig_error.h</a>"</span> |
| 00035 <span class="preprocessor">#endif</span> |
| 00036 <span class="preprocessor"></span> |
| 00037 <span class="preprocessor">#ifndef OSCL_ERROR_TRAPCLEANUP_H_INCLUDED</span> |
| 00038 <span class="preprocessor"></span><span class="preprocessor">#include "<a class="code" href="oscl__error__trapcleanup_8h.html">oscl_error_trapcleanup.h</a>"</span> |
| 00039 <span class="preprocessor">#endif</span> |
| 00040 <span class="preprocessor"></span><span class="preprocessor">#ifndef OSCL_DEFALLOC_H_INCLUDED</span> |
| 00041 <span class="preprocessor"></span><span class="preprocessor">#include "<a class="code" href="oscl__defalloc_8h.html">oscl_defalloc.h</a>"</span> |
| 00042 <span class="preprocessor">#endif</span> |
| 00043 <span class="preprocessor"></span><span class="preprocessor">#ifndef OSCL_ERROR_H_INCLUDED</span> |
| 00044 <span class="preprocessor"></span><span class="preprocessor">#include "<a class="code" href="oscl__error_8h.html">oscl_error.h</a>"</span> |
| 00045 <span class="preprocessor">#endif</span> |
| 00046 <span class="preprocessor"></span> |
| 00047 <span class="keyword">class </span><a class="code" href="classOscl__DefAlloc.html">Oscl_DefAlloc</a>; |
| 00048 |
| 00049 <span class="comment">//this defines the maximum depth of the jump mark stack.</span> |
| <a name="l00050"></a><a class="code" href="group__osclerror.html#a41">00050</a> <span class="preprocessor">#define OSCL_JUMP_MAX_JUMP_MARKS OSCL_MAX_TRAP_LEVELS</span> |
| 00051 <span class="preprocessor"></span> |
| 00052 |
| 00053 <span class="comment">//OsclJump class</span> |
| <a name="l00054"></a><a class="code" href="classOsclJump.html">00054</a> <span class="keyword">class </span><a class="code" href="classOsclJump.html">OsclJump</a> |
| 00055 { |
| 00056 <span class="keyword">public</span>: |
| 00057 <span class="comment">//for use in macros only.</span> |
| 00058 |
| 00059 OSCL_IMPORT_REF <span class="keyword">static</span> <span class="keywordtype">void</span> <a class="code" href="classOsclJump.html#d0">StaticJump</a>(<span class="keywordtype">int</span> a); |
| 00060 |
| <a name="l00061"></a><a class="code" href="classOsclJump.html#a0">00061</a> <span class="keywordtype">void</span> <a class="code" href="classOsclJump.html#a0">Jump</a>(<span class="keywordtype">int</span> a) |
| 00062 { |
| 00063 <span class="keywordflow">if</span> (!<a class="code" href="classOsclJump.html#a1">Top</a>()) |
| 00064 { |
| 00065 <span class="comment">//Note: you can't leave here, since leave would</span> |
| 00066 <span class="comment">//invoke this routine again. It is not safe to return</span> |
| 00067 <span class="comment">//either, because calling code is expecting an execution</span> |
| 00068 <span class="comment">//end.</span> |
| 00069 <a class="code" href="group__osclbase.html#a78">OSCL_ASSERT</a>(<span class="keyword">false</span>); |
| 00070 <a class="code" href="group__osclbase.html#a34">_OSCL_Abort</a>(); |
| 00071 } |
| 00072 longjmp(*<a class="code" href="classOsclJump.html#a1">Top</a>(), a); |
| 00073 } |
| 00074 |
| <a name="l00075"></a><a class="code" href="classOsclJump.html#a1">00075</a> jmp_buf *<a class="code" href="classOsclJump.html#a1">Top</a>() |
| 00076 { |
| 00077 <a class="code" href="group__osclbase.html#a78">OSCL_ASSERT</a>(iJumpIndex >= 0); |
| 00078 <span class="keywordflow">return</span> &iJumpArray[iJumpIndex]; |
| 00079 } |
| 00080 |
| <a name="l00081"></a><a class="code" href="classOsclJump.html#a2">00081</a> <a class="code" href="classOsclJump.html#a2">~OsclJump</a>() |
| 00082 { |
| 00083 <span class="comment">//jump mark stack should be empty at this point.</span> |
| 00084 <a class="code" href="group__osclbase.html#a78">OSCL_ASSERT</a>(iJumpIndex == (-1)); |
| 00085 } |
| 00086 |
| 00087 <span class="keyword">private</span>: |
| 00088 <a class="code" href="classOsclJump.html">OsclJump</a>(): iJumpIndex(-1) {} |
| 00089 |
| 00090 <span class="keywordtype">void</span> PushMark() |
| 00091 { |
| 00092 <a class="code" href="group__osclbase.html#a78">OSCL_ASSERT</a>(iJumpIndex < (<a class="code" href="group__osclerror.html#a41">OSCL_JUMP_MAX_JUMP_MARKS</a> - 1));<span class="comment">//jump stack is full!</span> |
| 00093 iJumpIndex++; |
| 00094 } |
| 00095 |
| 00096 <span class="keywordtype">void</span> PopMark() |
| 00097 { |
| 00098 <a class="code" href="group__osclbase.html#a78">OSCL_ASSERT</a>(iJumpIndex >= 0);<span class="comment">//jump stack is empty!</span> |
| 00099 iJumpIndex--; |
| 00100 } |
| 00101 |
| 00102 jmp_buf iJumpArray[<a class="code" href="group__osclerror.html#a41">OSCL_JUMP_MAX_JUMP_MARKS</a>]; |
| 00103 |
| 00104 <span class="comment">//index to top of stack, or (-1) when stack is empty</span> |
| 00105 int32 iJumpIndex; |
| 00106 |
| <a name="l00107"></a><a class="code" href="classOsclJump.html#l0">00107</a> <span class="keyword">friend</span> <span class="keyword">class </span><a class="code" href="classOsclErrorTrapImp.html">OsclErrorTrapImp</a>; |
| 00108 }; |
| 00109 |
| 00110 |
| 00111 <span class="comment">//internal jump type codes.</span> |
| <a name="l00112"></a><a class="code" href="group__osclerror.html#a42">00112</a> <span class="preprocessor">#define internalLeave (-1)</span> |
| 00113 <span class="preprocessor"></span> |
| 00114 <span class="comment">//Leave uses the OsclJump methods</span> |
| <a name="l00115"></a><a class="code" href="oscl__error__imp__jumps_8h.html#a2">00115</a> <span class="preprocessor">#define PVError_DoLeave() OsclJump::StaticJump(internalLeave)</span> |
| 00116 <span class="preprocessor"></span> |
| 00117 <span class="comment">//_PV_TRAP macro catches leaves.</span> |
| 00118 <span class="comment">//_r is leave code, _s is statements to execute.</span> |
| <a name="l00119"></a><a class="code" href="oscl__error__imp__jumps_8h.html#a3">00119</a> <span class="preprocessor">#define _PV_TRAP(__r,__s)\</span> |
| 00120 <span class="preprocessor"> __r=OsclErrNone;\</span> |
| 00121 <span class="preprocessor"> {\</span> |
| 00122 <span class="preprocessor"> OsclErrorTrapImp* __trap=OsclErrorTrapImp::Trap();\</span> |
| 00123 <span class="preprocessor"> if(!__trap){__s;}else{\</span> |
| 00124 <span class="preprocessor"> int __tr=setjmp(*(__trap->iJumpData->Top()));\</span> |
| 00125 <span class="preprocessor"> if (__tr==0)\</span> |
| 00126 <span class="preprocessor"> {__s;}\</span> |
| 00127 <span class="preprocessor"> else if (__tr==internalLeave)\</span> |
| 00128 <span class="preprocessor"> {__r=__trap->iLeave;}\</span> |
| 00129 <span class="preprocessor"> __trap->UnTrap();}\</span> |
| 00130 <span class="preprocessor"> }</span> |
| 00131 <span class="preprocessor"></span> |
| 00132 <span class="comment">//Same as _PV_TRAP but avoids a TLS lookup.</span> |
| 00133 <span class="comment">// __trapimp is the OsclErrorTrapImp* for the calling thread.</span> |
| <a name="l00134"></a><a class="code" href="oscl__error__imp__jumps_8h.html#a4">00134</a> <span class="preprocessor">#define _PV_TRAP_NO_TLS(__trapimp,__r,__s)\</span> |
| 00135 <span class="preprocessor"> __r=OsclErrNone;\</span> |
| 00136 <span class="preprocessor"> {\</span> |
| 00137 <span class="preprocessor"> OsclErrorTrapImp* __trap=OsclErrorTrapImp::TrapNoTls(__trapimp);\</span> |
| 00138 <span class="preprocessor"> if(!__trap){__s;}else{\</span> |
| 00139 <span class="preprocessor"> int __tr=setjmp(*(__trap->iJumpData->Top()));\</span> |
| 00140 <span class="preprocessor"> if (__tr==0)\</span> |
| 00141 <span class="preprocessor"> {__s;}\</span> |
| 00142 <span class="preprocessor"> else if (__tr==internalLeave)\</span> |
| 00143 <span class="preprocessor"> {__r=__trap->iLeave;}\</span> |
| 00144 <span class="preprocessor"> __trap->UnTrap();}\</span> |
| 00145 <span class="preprocessor"> }</span> |
| 00146 <span class="preprocessor"></span> |
| 00147 |
| 00148 <span class="preprocessor">#endif // OSCL_ERROR_IMP_JUMPS_H_INCLUDED</span> |
| 00149 <span class="preprocessor"></span> |
| </pre></div><hr size="1"><img src="pvlogo_small.jpg"><address style="align: right;"><small>OSCL API</small> |
| <address style="align: left;"><small>Posting Version: OPENCORE_20090310 </small> |
| </small></address> |
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