/* ex - Exception Handling */
-/* Copyright (c) 2005-2010 The SimGrid team */
+/* Copyright (c) 2005-2014. The SimGrid Team.
+ * All rights reserved. */
+
/* Copyright (c) 2002-2004 Ralf S. Engelschall <rse@engelschall.com> */
/* Copyright (c) 2002-2004 The OSSP Project <http://www.ossp.org/> */
/* Copyright (c) 2002-2004 Cable & Wireless <http://www.cw.com/> */
# define MAYDAY_CATCH(e) printf("%d %s:%d Catched '%s'\n", \
xbt_getpid(), __FILE__, __LINE__, \
(e).msg \
- ),
+ ),
#else
# define MAYDAY_SAVE(m)
# define MAYDAY_RESTORE(m)
*
* Any exception thrown directly from the TRIED_BLOCK block or from called
* subroutines is caught. Cleanups which must be done after this block
- * (whenever an exception arised or not) should be placed into the optionnal
+ * (whenever an exception arose or not) should be placed into the optionnal
* CLEANUP_BLOCK. The code dealing with the exceptions when they arise should
* be placed into the (mandatory) CATCH_BLOCK.
*
/** @brief different kind of errors */
typedef enum {
- unknown_error = 0,/**< unknown error */
- arg_error, /**< Invalid argument */
- bound_error, /**< Out of bounds argument */
- mismatch_error, /**< The provided ID does not match */
- not_found_error, /**< The searched element was not found */
-
- system_error, /**< a syscall did fail */
- network_error, /**< error while sending/receiving data */
- timeout_error, /**< not quick enough, dude */
- cancel_error, /**< an action was canceled */
- thread_error, /**< error while [un]locking */
- host_error, /**< host failed */
- tracing_error /**< error during the simulation tracing */
+ unknown_error = 0, /**< unknown error */
+ arg_error, /**< Invalid argument */
+ bound_error, /**< Out of bounds argument */
+ mismatch_error, /**< The provided ID does not match */
+ not_found_error, /**< The searched element was not found */
+ system_error, /**< a syscall did fail */
+ network_error, /**< error while sending/receiving data */
+ timeout_error, /**< not quick enough, dude */
+ cancel_error, /**< an action was canceled */
+ thread_error, /**< error while [un]locking */
+ host_error, /**< host failed */
+ tracing_error, /**< error during the simulation tracing */
+ io_error, /**< disk or file error */
+ vm_error /**< vm error */
} xbt_errcat_t;
XBT_PUBLIC(const char *) xbt_ex_catname(xbt_errcat_t cat);
/** @brief Structure describing an exception */
typedef struct {
- char *msg; /**< human readable message */
- xbt_errcat_t category;
- /**< category like HTTP (what went wrong) */
- int value; /**< like errno (why did it went wrong) */
+ char *msg; /**< human readable message */
+ xbt_errcat_t category; /**< category like HTTP (what went wrong) */
+ int value; /**< like errno (why did it went wrong) */
/* throw point */
- short int remote;
- /**< whether it was raised remotely */
- char *host; /**< NULL locally thrown exceptions; full hostname if remote ones */
- /* FIXME: host should be hostname:port[#thread] */
- char *procname;
- /**< Name of the process who thrown this */
- int pid; /**< PID of the process who thrown this */
- char *file; /**< Thrown point */
- int line; /**< Thrown point */
- char *func; /**< Thrown point */
+ char *procname; /**< Name of the process who thrown this */
+ int pid; /**< PID of the process who thrown this */
+ char *file; /**< Thrown point */
+ int line; /**< Thrown point */
+ char *func; /**< Thrown point */
/* Backtrace */
int used;
char **bt_strings; /* only filed on display (or before the network propagation) */
*/
typedef struct {
__ex_mctx_t *ctx_mctx; /* permanent machine context of enclosing try/catch */
- volatile int ctx_caught; /* temporary flag whether exception was caught */
+ int ctx_caught; /* temporary flag whether exception was caught */
volatile xbt_ex_t exception; /* temporary exception storage */
} xbt_running_ctx_t;
/* the static and dynamic initializers for a context structure */
-#define XBT_RUNNING_CTX_INITIALIZER \
- { NULL, 0, { /* content */ NULL, unknown_error, 0, \
- /* throw point*/ 0,NULL, NULL,0, NULL, 0, NULL,\
- /* backtrace */ 0,NULL,{NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL} } }
-#define XBT_RUNNING_CTX_INITIALIZE(ctx) \
- do { \
- (ctx)->ctx_mctx = NULL; \
- (ctx)->ctx_caught = 0; \
- (ctx)->exception.msg = NULL; \
- (ctx)->exception.category = 0; \
- (ctx)->exception.value = 0; \
- (ctx)->exception.remote = 0; \
- (ctx)->exception.host = NULL; \
- (ctx)->exception.procname = NULL; \
- (ctx)->exception.pid = 0; \
- (ctx)->exception.file = NULL; \
- (ctx)->exception.line = 0; \
- (ctx)->exception.func = NULL; \
- (ctx)->exception.bt[0] = NULL; \
- (ctx)->exception.bt[1] = NULL; \
- (ctx)->exception.bt[2] = NULL; \
- (ctx)->exception.bt[3] = NULL; \
- (ctx)->exception.bt[4] = NULL; \
- (ctx)->exception.bt[5] = NULL; \
- (ctx)->exception.bt[6] = NULL; \
- (ctx)->exception.bt[7] = NULL; \
- (ctx)->exception.bt[8] = NULL; \
- (ctx)->exception.bt[9] = NULL; \
- (ctx)->exception.used = 0; \
- (ctx)->exception.bt_strings = NULL; \
- } while (0)
+#define XBT_RUNNING_CTX_INITIALIZER \
+ { NULL, 0, { /* content */ NULL, unknown_error, 0, \
+ /* throw point*/ NULL, 0, NULL, 0, NULL, \
+ /* backtrace */ 0, NULL, /* bt[] */ } }
+
+XBT_PUBLIC_DATA(const xbt_running_ctx_t) __xbt_ex_ctx_initializer;
+#define XBT_RUNNING_CTX_INITIALIZE(ctx) (*(ctx) = __xbt_ex_ctx_initializer)
/* the exception context */
typedef xbt_running_ctx_t *(*xbt_running_ctx_fetcher_t) (void);
XBT_PUBLIC_DATA(xbt_running_ctx_fetcher_t) __xbt_running_ctx_fetch;
-extern xbt_running_ctx_t *__xbt_ex_ctx_default(void);
+XBT_PUBLIC( xbt_running_ctx_t *)__xbt_ex_ctx_default(void);
/* the termination handler */
typedef void (*ex_term_cb_t) (xbt_ex_t *);
XBT_PUBLIC_DATA(ex_term_cb_t) __xbt_ex_terminate;
-extern void __xbt_ex_terminate_default(xbt_ex_t * e);
+XBT_PUBLIC( void )__xbt_ex_terminate_default(xbt_ex_t * e);
/** @brief Introduce a block where exception may be dealed with
* @hideinitializer
} \
else
-#define DO_THROW(running_ctx) \
- /* deal with the exception */ \
- if (running_ctx->ctx_mctx == NULL) \
- __xbt_ex_terminate((xbt_ex_t*)&(running_ctx->exception)); /* not catched */ \
- else \
- __ex_mctx_restore(running_ctx->ctx_mctx); /* catched somewhere */ \
- abort() /* nope, stupid GCC, we won't survive a THROW (this won't be reached) */
+#define DO_THROW(running_ctx) \
+ do { /* deal with the exception */ \
+ xbt_running_ctx_t *ctx = (running_ctx); \
+ if (ctx->ctx_mctx == NULL) \
+ __xbt_ex_terminate((xbt_ex_t*)&(ctx->exception)); /* not catched */ \
+ else \
+ __ex_mctx_restore(ctx->ctx_mctx); /* catched somewhere */ \
+ abort(); /* nope, stupid GCC, we won't survive a THROW */ \
+ /* (this won't be reached) */ \
+ } while(0)
/** @brief Helper macro for THROW and THROWF
* @hideinitializer
*
+ * @param _throw_ctx: the throwing context in which we should construct the exception
* @param c: category code (integer)
* @param v: value (integer)
* @param m: message text
* CLEANUP and CATCH blocks.
*/
-#define _THROW(c,v,m) \
- do { /* change this sequence into one block */ \
- xbt_running_ctx_t *_throw_ctx = __xbt_running_ctx_fetch(); \
- /* build the exception */ \
- _throw_ctx->exception.msg = (m); \
- _throw_ctx->exception.category = (xbt_errcat_t)(c); \
- _throw_ctx->exception.value = (v); \
- _throw_ctx->exception.remote = 0; \
- _throw_ctx->exception.host = (char*)NULL; \
- _throw_ctx->exception.procname = (char*)xbt_procname(); \
- _throw_ctx->exception.pid = xbt_getpid(); \
- _throw_ctx->exception.file = (char*)__FILE__; \
- _throw_ctx->exception.line = __LINE__; \
- _throw_ctx->exception.func = (char*)_XBT_FUNCTION; \
- _throw_ctx->exception.bt_strings = NULL; \
- xbt_backtrace_current( (xbt_ex_t *) &(_throw_ctx->exception) ); \
- DO_THROW(_throw_ctx); \
+#define THROW_PREPARE(_throw_ctx, c, v, m) \
+ /* build the exception */ \
+ _throw_ctx->exception.msg = (m); \
+ _throw_ctx->exception.category = (xbt_errcat_t)(c); \
+ _throw_ctx->exception.value = (v); \
+ _throw_ctx->exception.procname = (char*)xbt_procname(); \
+ _throw_ctx->exception.pid = xbt_getpid(); \
+ _throw_ctx->exception.file = (char*)__FILE__; \
+ _throw_ctx->exception.line = __LINE__; \
+ _throw_ctx->exception.func = (char*)_XBT_FUNCTION; \
+ _throw_ctx->exception.bt_strings = NULL; \
+ xbt_backtrace_current((xbt_ex_t *)&(_throw_ctx->exception));
+
+#define _THROW(c, v, m) \
+ do { /* change this sequence into one block */ \
+ xbt_running_ctx_t *_throw_ctx = __xbt_running_ctx_fetch(); \
+ THROW_PREPARE(_throw_ctx, c, v, m); \
+ DO_THROW(_throw_ctx); \
} while (0)
/** @brief Builds and throws an exception
#define THROW_UNIMPLEMENTED \
THROWF(unknown_error, 0, "Function %s unimplemented",_XBT_FUNCTION)
-#ifndef NDEBUG
-# define DIE_IMPOSSIBLE xbt_assert(0,"The Impossible Did Happen (yet again)")
-#else
-# define DIE_IMPOSSIBLE exit(1);
-#endif
+#define DIE_IMPOSSIBLE xbt_die("The Impossible Did Happen (yet again)")
/** @brief re-throwing of an already caught exception (ie, pass it to the upper catch block)
* @hideinitializer
*/
-#define RETHROW \
- do { \
- xbt_running_ctx_t *ctx = __xbt_running_ctx_fetch(); \
- if (ctx->ctx_mctx == NULL) \
- __xbt_ex_terminate((xbt_ex_t*)&(ctx->exception)); \
- else \
- __ex_mctx_restore(ctx->ctx_mctx); \
- abort();\
- } while(0)
+#define RETHROW DO_THROW(__xbt_running_ctx_fetch())
/** @brief like THROWF, but adding some details to the message of an existing exception
* @hideinitializer
/** @brief Exception destructor */
XBT_PUBLIC(void) xbt_ex_free(xbt_ex_t e);
+/** @brief The display made by an exception that is not catched */
+XBT_PUBLIC(void) xbt_ex_display(xbt_ex_t * e);
/** @brief Shows a backtrace of the current location */
XBT_PUBLIC(void) xbt_backtrace_display_current(void);
+/** @brief reimplementation of glibc backtrace based directly on gcc library, without implicit malloc */
+XBT_PUBLIC(int) xbt_backtrace_no_malloc(void**bt, int size);
/** @brief Captures a backtrace for further use */
XBT_PUBLIC(void) xbt_backtrace_current(xbt_ex_t * e);
/** @brief Display a previously captured backtrace */
XBT_PUBLIC(void) xbt_backtrace_display(xbt_ex_t * e);
+/** @brief Get current backtrace with libunwind */
+XBT_PUBLIC(int) xbt_libunwind_backtrace(void *bt[XBT_BACKTRACE_SIZE], int size);
#ifdef XBT_USE_DEPRECATED
SG_END_DECL()
-/** @} */
+/** @} */
#endif /* __XBT_EX_H__ */
