From 9a1110de820988afb4e9d195a59872b214de2d26 Mon Sep 17 00:00:00 2001 From: Sverker Eriksson Date: Thu, 17 Nov 2016 16:50:36 +0100 Subject: erts: Refactor crash dumping with cbprintf Instead of passing around a file descriptor use a function pointer to facilitate more advanced backend write logic such as size limitation or compression. --- erts/emulator/beam/break.c | 97 ++++++++++++++++++++++++---------------------- 1 file changed, 50 insertions(+), 47 deletions(-) (limited to 'erts/emulator/beam/break.c') diff --git a/erts/emulator/beam/break.c b/erts/emulator/beam/break.c index aa9bed5714..2e8a384dec 100644 --- a/erts/emulator/beam/break.c +++ b/erts/emulator/beam/break.c @@ -49,17 +49,17 @@ void erl_crash_dump_v(char *file, int line, char* fmt, va_list args); static void bin_check(void); #endif -static void print_garb_info(int to, void *to_arg, Process* p); +static void print_garb_info(fmtfn_t to, void *to_arg, Process* p); #ifdef OPPROF static void dump_frequencies(void); #endif -static void dump_attributes(int to, void *to_arg, byte* ptr, int size); +static void dump_attributes(fmtfn_t to, void *to_arg, byte* ptr, int size); extern char* erts_system_version[]; static void -port_info(int to, void *to_arg) +port_info(fmtfn_t to, void *to_arg) { int i, max = erts_ptab_max(&erts_port); for (i = 0; i < max; i++) { @@ -70,7 +70,7 @@ port_info(int to, void *to_arg) } void -process_info(int to, void *to_arg) +process_info(fmtfn_t to, void *to_arg) { int i, max = erts_ptab_max(&erts_proc); for (i = 0; i < max; i++) { @@ -147,14 +147,14 @@ process_killer(void) typedef struct { int is_first; - int to; + fmtfn_t to; void *to_arg; } PrintMonitorContext; static void doit_print_link(ErtsLink *lnk, void *vpcontext) { PrintMonitorContext *pcontext = vpcontext; - int to = pcontext->to; + fmtfn_t to = pcontext->to; void *to_arg = pcontext->to_arg; if (pcontext->is_first) { @@ -169,7 +169,7 @@ static void doit_print_link(ErtsLink *lnk, void *vpcontext) static void doit_print_monitor(ErtsMonitor *mon, void *vpcontext) { PrintMonitorContext *pcontext = vpcontext; - int to = pcontext->to; + fmtfn_t to = pcontext->to; void *to_arg = pcontext->to_arg; char *prefix = ", "; @@ -196,7 +196,7 @@ static void doit_print_monitor(ErtsMonitor *mon, void *vpcontext) /* Display info about an individual Erlang process */ void -print_process_info(int to, void *to_arg, Process *p) +print_process_info(fmtfn_t to, void *to_arg, Process *p) { time_t approx_started; int garbing = 0; @@ -299,7 +299,7 @@ print_process_info(int to, void *to_arg, Process *p) /* display the links only if there are any*/ if (ERTS_P_LINKS(p) || ERTS_P_MONITORS(p)) { - PrintMonitorContext context = {1,to}; + PrintMonitorContext context = {1, to, to_arg}; erts_print(to, to_arg,"Link list: ["); erts_doforall_links(ERTS_P_LINKS(p), &doit_print_link, &context); erts_doforall_monitors(ERTS_P_MONITORS(p), &doit_print_monitor, &context); @@ -347,7 +347,7 @@ print_process_info(int to, void *to_arg, Process *p) } static void -print_garb_info(int to, void *to_arg, Process* p) +print_garb_info(fmtfn_t to, void *to_arg, Process* p) { #ifdef ERTS_SMP /* ERTS_SMP: A scheduler is probably concurrently doing gc... */ @@ -364,7 +364,7 @@ print_garb_info(int to, void *to_arg, Process* p) } void -info(int to, void *to_arg) +info(fmtfn_t to, void *to_arg) { erts_memory(&to, to_arg, NULL, THE_NON_VALUE); atom_info(to, to_arg); @@ -380,7 +380,7 @@ info(int to, void *to_arg) } void -loaded(int to, void *to_arg) +loaded(fmtfn_t to, void *to_arg) { int i; int old = 0; @@ -477,7 +477,7 @@ loaded(int to, void *to_arg) static void -dump_attributes(int to, void *to_arg, byte* ptr, int size) +dump_attributes(fmtfn_t to, void *to_arg, byte* ptr, int size) { while (size-- > 0) { erts_print(to, to_arg, "%02X", *ptr++); @@ -678,6 +678,8 @@ erl_crash_dump_v(char *file, int line, char* fmt, va_list args) int secs; int env_erl_crash_dump_seconds_set = 1; int i; + fmtfn_t to = &erts_write_fd; + void* to_arg; if (ERTS_SOMEONE_IS_CRASH_DUMPING) return; @@ -768,39 +770,40 @@ erl_crash_dump_v(char *file, int line, char* fmt, va_list args) fd = open(dumpname,O_WRONLY | O_CREAT | O_TRUNC,0640); if (fd < 0) return; /* Can't create the crash dump, skip it */ + to_arg = (void*)&fd; time(&now); - erts_fdprintf(fd, "=erl_crash_dump:0.3\n%s", ctime(&now)); + erts_cbprintf(to, to_arg, "=erl_crash_dump:0.3\n%s", ctime(&now)); if (file != NULL) - erts_fdprintf(fd, "The error occurred in file %s, line %d\n", file, line); + erts_cbprintf(to, to_arg, "The error occurred in file %s, line %d\n", file, line); if (fmt != NULL && *fmt != '\0') { - erts_fdprintf(fd, "Slogan: "); - erts_vfdprintf(fd, fmt, args); + erts_cbprintf(to, to_arg, "Slogan: "); + erts_vcbprintf(to, to_arg, fmt, args); } - erts_fdprintf(fd, "System version: "); - erts_print_system_version(fd, NULL, NULL); + erts_cbprintf(to, to_arg, "System version: "); + erts_print_system_version(to, to_arg, NULL); #if ERTS_SAVED_COMPILE_TIME - erts_fdprintf(fd, "%s\n", "Compiled: " ERLANG_COMPILE_DATE); + erts_cbprintf(to, to_arg, "%s\n", "Compiled: " ERLANG_COMPILE_DATE); #endif - erts_fdprintf(fd, "Taints: "); - erts_print_nif_taints(fd, NULL); - erts_fdprintf(fd, "Atoms: %d\n", atom_table_size()); + erts_cbprintf(to, to_arg, "Taints: "); + erts_print_nif_taints(to, to_arg); + erts_cbprintf(to, to_arg, "Atoms: %d\n", atom_table_size()); #ifdef USE_THREADS /* We want to note which thread it was that called erts_exit */ if (erts_get_scheduler_data()) { - erts_fdprintf(fd, "Calling Thread: scheduler:%d\n", + erts_cbprintf(to, to_arg, "Calling Thread: scheduler:%d\n", erts_get_scheduler_data()->no); } else { if (!erts_thr_getname(erts_thr_self(), dumpnamebuf, MAXPATHLEN)) - erts_fdprintf(fd, "Calling Thread: %s\n", dumpnamebuf); + erts_cbprintf(to, to_arg, "Calling Thread: %s\n", dumpnamebuf); else - erts_fdprintf(fd, "Calling Thread: %p\n", erts_thr_self()); + erts_cbprintf(to, to_arg, "Calling Thread: %p\n", erts_thr_self()); } #else - erts_fdprintf(fd, "Calling Thread: scheduler:1\n"); + erts_cbprintf(to, to_arg, "Calling Thread: scheduler:1\n"); #endif #if defined(ERTS_HAVE_TRY_CATCH) @@ -815,8 +818,8 @@ erl_crash_dump_v(char *file, int line, char* fmt, va_list args) */ for (i = 0; i < erts_no_schedulers; i++) { ERTS_SYS_TRY_CATCH( - erts_print_scheduler_info(fd, NULL, ERTS_SCHEDULER_IX(i)), - erts_fdprintf(fd, "** crashed **\n")); + erts_print_scheduler_info(to, to_arg, ERTS_SCHEDULER_IX(i)), + erts_cbprintf(to, to_arg, "** crashed **\n")); } #endif @@ -847,38 +850,38 @@ erl_crash_dump_v(char *file, int line, char* fmt, va_list args) #ifndef ERTS_HAVE_TRY_CATCH /* This is safe to call here, as all schedulers are blocked */ for (i = 0; i < erts_no_schedulers; i++) { - erts_print_scheduler_info(fd, NULL, ERTS_SCHEDULER_IX(i)); + erts_print_scheduler_info(to, to_arg, ERTS_SCHEDULER_IX(i)); } #endif - info(fd, NULL); /* General system info */ + info(to, to_arg); /* General system info */ if (erts_ptab_initialized(&erts_proc)) - process_info(fd, NULL); /* Info about each process and port */ - db_info(fd, NULL, 0); - erts_print_bif_timer_info(fd, NULL); - distribution_info(fd, NULL); - erts_fdprintf(fd, "=loaded_modules\n"); - loaded(fd, NULL); - erts_dump_fun_entries(fd, NULL); - erts_deep_process_dump(fd, NULL); - erts_fdprintf(fd, "=atoms\n"); - dump_atoms(fd, NULL); + process_info(to, to_arg); /* Info about each process and port */ + db_info(to, to_arg, 0); + erts_print_bif_timer_info(to, to_arg); + distribution_info(to, to_arg); + erts_cbprintf(to, to_arg, "=loaded_modules\n"); + loaded(to, to_arg); + erts_dump_fun_entries(to, to_arg); + erts_deep_process_dump(to, to_arg); + erts_cbprintf(to, to_arg, "=atoms\n"); + dump_atoms(to, to_arg); /* Keep the instrumentation data at the end of the dump */ if (erts_instr_memory_map || erts_instr_stat) { - erts_fdprintf(fd, "=instr_data\n"); + erts_cbprintf(to, to_arg, "=instr_data\n"); if (erts_instr_stat) { - erts_fdprintf(fd, "=memory_status\n"); - erts_instr_dump_stat_to_fd(fd, 0); + erts_cbprintf(to, to_arg, "=memory_status\n"); + erts_instr_dump_stat_to(to, to_arg, 0); } if (erts_instr_memory_map) { - erts_fdprintf(fd, "=memory_map\n"); - erts_instr_dump_memory_map_to_fd(fd); + erts_cbprintf(to, to_arg, "=memory_map\n"); + erts_instr_dump_memory_map_to(to, to_arg); } } - erts_fdprintf(fd, "=end\n"); + erts_cbprintf(to, to_arg, "=end\n"); close(fd); erts_fprintf(stderr,"done\n"); } -- cgit v1.2.3