X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/bd1afed305dfd477d90d107e060bfc3c22620110..ac9b849c157154d379961e139bf8e1a436eb0bc1:/include/xbt/ex.h diff --git a/include/xbt/ex.h b/include/xbt/ex.h index afa9c7ca86..1b92377d8d 100644 --- a/include/xbt/ex.h +++ b/include/xbt/ex.h @@ -32,8 +32,8 @@ #ifndef __XBT_EX_H__ #define __XBT_EX_H__ -#include #include +#include /* do not include execinfo.h directly since it's not always available. Instead, copy the parts we need (and fake when it's not there) */ @@ -72,10 +72,6 @@ typedef struct { __ex_mctx_struct } __ex_mctx_t; /** @addtogroup XBT_ex * @brief A set of macros providing exception a la C++ in ANSI C (grounding feature) * - *
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- * * This module is a small ISO-C++ style exception handling library * for use in the ISO-C language. It allows you to use the paradigm * of throwing and catching exceptions in order to reduce the amount @@ -92,12 +88,16 @@ typedef struct { __ex_mctx_struct } __ex_mctx_t; * These features are brought to you by a modified version of the libex * library, one of the numerous masterpiece of Ralf S. Engelschall. * + * \htmlonly
\endhtmlonly + * * @section XBT_ex_toc TABLE OF CONTENTS * * - \ref XBT_ex_intro * - \ref XBT_ex_base * - \ref XBT_ex_pitfalls * + * \htmlonly
\endhtmlonly + * * @section XBT_ex_intro DESCRIPTION * * In SimGrid, an exception is a triple <\a msg , \a category , \a value> @@ -170,7 +170,7 @@ typedef struct { __ex_mctx_struct } __ex_mctx_t; * following code which shows some pitfalls and contains many errors (assuming * a mallocex() function which throws an exception if malloc(3) fails): * - * \dontinclude ex_test.c + * \dontinclude ex.c * \skip BAD_EXAMPLE * \until end_of_bad_example * @@ -211,6 +211,7 @@ typedef struct { __ex_mctx_struct } __ex_mctx_t; * @{ */ +/** @brief different kind of errors */ typedef enum { unknown_error=0, /**< unknown error */ arg_error, /**< Invalid argument */ @@ -231,14 +232,16 @@ typedef struct { xbt_errcat_t category; /**< category like HTTP (what went wrong) */ int value; /**< like errno (why did it went wrong) */ /* throw point */ - char *host; /* NULL for localhost; hostname:port if remote */ + char *host; /* NULL for localhost; hostname if remote */ + /* FIXME: host should be hostname:port[#thread] */ char *procname; char *file; /**< to be freed only for remote exceptions */ int line; char *func; /**< to be freed only for remote exceptions */ /* Backtrace */ - void *bt[10]; int used; + char **bt_strings; /* only filed on display (or before the network propagation) */ + void *bt[XBT_BACKTRACE_SIZE]; } xbt_ex_t; /* declare the context type (private) */ @@ -252,30 +255,31 @@ typedef struct { #define XBT_CTX_INITIALIZER \ { NULL, 0, { /* content */ NULL, unknown_error, 0, \ /* throw point*/ NULL, NULL, NULL, 0, NULL,\ - /* backtrace */ {NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL},0 } } + /* backtrace */ 0,NULL,{NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL} } } #define XBT_CTX_INITIALIZE(ctx) \ do { \ - (ctx)->ctx_mctx = NULL; \ - (ctx)->ctx_caught = 0; \ - (ctx)->ctx_ex.msg = NULL; \ - (ctx)->ctx_ex.category = 0; \ - (ctx)->ctx_ex.value = 0; \ - (ctx)->ctx_ex.host = NULL; \ - (ctx)->ctx_ex.procname = NULL; \ - (ctx)->ctx_ex.file = NULL; \ - (ctx)->ctx_ex.line = 0; \ - (ctx)->ctx_ex.func = NULL; \ - (ctx)->ctx_ex.bt[0] = NULL; \ - (ctx)->ctx_ex.bt[1] = NULL; \ - (ctx)->ctx_ex.bt[2] = NULL; \ - (ctx)->ctx_ex.bt[3] = NULL; \ - (ctx)->ctx_ex.bt[4] = NULL; \ - (ctx)->ctx_ex.bt[5] = NULL; \ - (ctx)->ctx_ex.bt[6] = NULL; \ - (ctx)->ctx_ex.bt[7] = NULL; \ - (ctx)->ctx_ex.bt[8] = NULL; \ - (ctx)->ctx_ex.bt[9] = NULL; \ - (ctx)->ctx_ex.used = 0; \ + (ctx)->ctx_mctx = NULL; \ + (ctx)->ctx_caught = 0; \ + (ctx)->ctx_ex.msg = NULL; \ + (ctx)->ctx_ex.category = 0; \ + (ctx)->ctx_ex.value = 0; \ + (ctx)->ctx_ex.host = NULL; \ + (ctx)->ctx_ex.procname = NULL; \ + (ctx)->ctx_ex.file = NULL; \ + (ctx)->ctx_ex.line = 0; \ + (ctx)->ctx_ex.func = NULL; \ + (ctx)->ctx_ex.bt[0] = NULL; \ + (ctx)->ctx_ex.bt[1] = NULL; \ + (ctx)->ctx_ex.bt[2] = NULL; \ + (ctx)->ctx_ex.bt[3] = NULL; \ + (ctx)->ctx_ex.bt[4] = NULL; \ + (ctx)->ctx_ex.bt[5] = NULL; \ + (ctx)->ctx_ex.bt[6] = NULL; \ + (ctx)->ctx_ex.bt[7] = NULL; \ + (ctx)->ctx_ex.bt[8] = NULL; \ + (ctx)->ctx_ex.bt[9] = NULL; \ + (ctx)->ctx_ex.used = 0; \ + (ctx)->ctx_ex.bt_strings = NULL; \ } while (0) /* the exception context */ @@ -347,6 +351,14 @@ extern void __xbt_ex_terminate_default(xbt_ex_t *e); } \ else +#define DO_THROW(e) \ + /* deal with the exception */ \ + if (__xbt_ex_ctx()->ctx_mctx == NULL) \ + __xbt_ex_terminate((xbt_ex_t *)&(e)); /* not catched */\ + else \ + __ex_mctx_restore(__xbt_ex_ctx()->ctx_mctx); /* catched somewhere */ \ + abort()/* nope, stupid GCC, we won't survive a THROW (this won't be reached) */ + /** @brief Helper macro for THROWS0-6 * @hideinitializer * @@ -369,20 +381,15 @@ extern void __xbt_ex_terminate_default(xbt_ex_t *e); do { /* change this sequence into one block */ \ /* build the exception */ \ __xbt_ex_ctx()->ctx_ex.msg = (m); \ - __xbt_ex_ctx()->ctx_ex.category = (c); \ + __xbt_ex_ctx()->ctx_ex.category = (xbt_errcat_t)(c); \ __xbt_ex_ctx()->ctx_ex.value = (v); \ __xbt_ex_ctx()->ctx_ex.host = (char*)NULL; \ __xbt_ex_ctx()->ctx_ex.procname = strdup(xbt_procname()); \ __xbt_ex_ctx()->ctx_ex.file = (char*)__FILE__; \ __xbt_ex_ctx()->ctx_ex.line = __LINE__; \ __xbt_ex_ctx()->ctx_ex.func = (char*)_XBT_FUNCTION; \ - __xbt_ex_ctx()->ctx_ex.used = backtrace((void**)__xbt_ex_ctx()->ctx_ex.bt,10);\ - /* deal with the exception */ \ - if (__xbt_ex_ctx()->ctx_mctx == NULL) \ - __xbt_ex_terminate((xbt_ex_t *)&(__xbt_ex_ctx()->ctx_ex)); /* not catched */\ - else \ - __ex_mctx_restore(__xbt_ex_ctx()->ctx_mctx); /* catched somewhere */ \ - abort();/* nope, stupid GCC, we won't survive a THROW (this won't be reached) */ \ + __xbt_ex_ctx()->ctx_ex.used = backtrace((void**)__xbt_ex_ctx()->ctx_ex.bt,XBT_BACKTRACE_SIZE);\ + DO_THROW(__xbt_ex_ctx()->ctx_ex);\ } while (0) /** @brief Builds and throws an exception with a string taking no arguments @@ -408,9 +415,14 @@ extern void __xbt_ex_terminate_default(xbt_ex_t *e); #define THROW6(c,v,m,a1,a2,a3,a4,a5,a6) _THROW(c,v,bprintf(m,a1,a2,a3,a4,a5,a6)) #define THROW_IMPOSSIBLE THROW0(unknown_error,0,"The Impossible Did Happen (yet again)") -#define DIE_IMPOSSIBLE xbt_assert0(0,"The Impossible Did Happen (yet again)") #define THROW_UNIMPLEMENTED THROW1(unknown_error,0,"Function %s unimplemented",__FUNCTION__) +#ifndef NDEBUG +# define DIE_IMPOSSIBLE xbt_assert0(0,"The Impossible Did Happen (yet again)") +#else +# define DIE_IMPOSSIBLE exit(1); +#endif + /** @brief re-throwing of an already caught exception (ie, pass it to the upper catch block) * @hideinitializer */