149 lines
3.7 KiB
C
149 lines
3.7 KiB
C
/* $Header: /pjproject-0.3/pjlib/src/pj/except.c 6 10/14/05 12:26a Bennylp $ */
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/*
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* $Log: /pjproject-0.3/pjlib/src/pj/except.c $
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*
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* 6 10/14/05 12:26a Bennylp
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* Finished error code framework, some fixes in ioqueue, etc. Pretty
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* major.
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*
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* 5 9/21/05 1:39p Bennylp
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* Periodic checkin for backup.
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*
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* 4 9/17/05 10:37a Bennylp
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* Major reorganization towards version 0.3.
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*
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*/
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#include <pj/except.h>
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#include <pj/os.h>
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#include <pj/assert.h>
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#include <pj/log.h>
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#include <pj/errno.h>
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static long thread_local_id = -1;
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#if defined(PJ_HAS_EXCEPTION_NAMES) && PJ_HAS_EXCEPTION_NAMES != 0
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static const char *exception_id_names[PJ_MAX_EXCEPTION_ID];
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#else
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/*
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* Start from 1 (not 0)!!!
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* Exception 0 is reserved for normal path of setjmp()!!!
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*/
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static int last_exception_id = 1;
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#endif /* PJ_HAS_EXCEPTION_NAMES */
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PJ_DEF(void) pj_throw_exception_(int exception_id)
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{
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struct pj_exception_state_t *handler;
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handler = pj_thread_local_get(thread_local_id);
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if (handler == NULL) {
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PJ_LOG(1,("except.c", "!!!FATAL: unhandled exception %d!\n", exception_id));
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pj_assert(handler != NULL);
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/* This will crash the system! */
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}
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pj_longjmp(handler->state, exception_id);
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}
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PJ_DEF(void) pj_push_exception_handler_(struct pj_exception_state_t *rec)
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{
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struct pj_exception_state_t *parent_handler = NULL;
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if (thread_local_id == -1) {
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pj_thread_local_alloc(&thread_local_id);
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pj_assert(thread_local_id != -1);
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}
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parent_handler = pj_thread_local_get(thread_local_id);
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rec->prev = parent_handler;
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pj_thread_local_set(thread_local_id, rec);
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}
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PJ_DEF(void) pj_pop_exception_handler_(void)
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{
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struct pj_exception_state_t *handler;
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handler = pj_thread_local_get(thread_local_id);
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pj_assert(handler != NULL);
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pj_thread_local_set(thread_local_id, handler->prev);
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}
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#if defined(PJ_HAS_EXCEPTION_NAMES) && PJ_HAS_EXCEPTION_NAMES != 0
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PJ_DEF(pj_status_t) pj_exception_id_alloc( const char *name,
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pj_exception_id_t *id)
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{
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unsigned i;
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pj_enter_critical_section();
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/*
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* Start from 1 (not 0)!!!
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* Exception 0 is reserved for normal path of setjmp()!!!
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*/
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for (i=1; i<PJ_MAX_EXCEPTION_ID; ++i) {
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if (exception_id_names[i] == NULL) {
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exception_id_names[i] = name;
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*id = i;
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pj_leave_critical_section();
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return PJ_SUCCESS;
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}
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}
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pj_leave_critical_section();
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return PJ_ETOOMANY;
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}
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PJ_DEF(pj_status_t) pj_exception_id_free( pj_exception_id_t id )
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{
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/*
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* Start from 1 (not 0)!!!
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* Exception 0 is reserved for normal path of setjmp()!!!
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*/
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PJ_ASSERT_RETURN(id>0 && id<PJ_MAX_EXCEPTION_ID, PJ_EINVAL);
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pj_enter_critical_section();
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exception_id_names[id] = NULL;
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pj_leave_critical_section();
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return PJ_SUCCESS;
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}
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PJ_DEF(const char*) pj_exception_id_name(pj_exception_id_t id)
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{
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/*
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* Start from 1 (not 0)!!!
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* Exception 0 is reserved for normal path of setjmp()!!!
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*/
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PJ_ASSERT_RETURN(id>0 && id<PJ_MAX_EXCEPTION_ID, "<Invalid ID>");
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if (exception_id_names[id] == NULL)
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return "<Unallocated ID>";
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return exception_id_names[id];
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}
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#else /* PJ_HAS_EXCEPTION_NAMES */
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PJ_DEF(pj_status_t) pj_exception_id_alloc( const char *name,
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pj_exception_id_t *id)
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{
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PJ_ASSERT_RETURN(last_exception_id < PJ_MAX_EXCEPTION_ID-1, PJ_ETOOMANY);
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*id = last_exception_id++
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return PJ_SUCCESS;
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}
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PJ_DEF(pj_status_t) pj_exception_id_free( pj_exception_id_t id )
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{
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return PJ_SUCCESS;
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}
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PJ_DEF(const char*) pj_exception_id_name(pj_exception_id_t id)
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{
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return "";
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}
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#endif /* PJ_HAS_EXCEPTION_NAMES */
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