| /* |
| * |
| * Copyright 2015, Google Inc. |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are |
| * met: |
| * |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Redistributions in binary form must reproduce the above |
| * copyright notice, this list of conditions and the following disclaimer |
| * in the documentation and/or other materials provided with the |
| * distribution. |
| * * Neither the name of Google Inc. nor the names of its |
| * contributors may be used to endorse or promote products derived from |
| * this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| * |
| */ |
| |
| #include <grpc/support/port_platform.h> |
| |
| #ifdef GRPC_BASIC_PROFILER |
| |
| #include "src/core/profiling/timers.h" |
| |
| #include <grpc/support/alloc.h> |
| #include <grpc/support/log.h> |
| #include <grpc/support/time.h> |
| #include <grpc/support/sync.h> |
| #include <grpc/support/thd.h> |
| #include <stdio.h> |
| |
| typedef enum { |
| BEGIN = '{', |
| END = '}', |
| MARK = '.', |
| IMPORTANT = '!' |
| } marker_type; |
| |
| typedef struct grpc_timer_entry { |
| gpr_timespec tm; |
| const char *tagstr; |
| marker_type type; |
| const char *file; |
| int line; |
| } grpc_timer_entry; |
| |
| #define MAX_COUNT (1024 * 1024 / sizeof(grpc_timer_entry)) |
| |
| static __thread grpc_timer_entry g_log[MAX_COUNT]; |
| static __thread int g_count; |
| static gpr_once g_once_init = GPR_ONCE_INIT; |
| static FILE *output_file; |
| |
| static void close_output() { fclose(output_file); } |
| |
| static void init_output() { |
| output_file = fopen("latency_trace.txt", "w"); |
| GPR_ASSERT(output_file); |
| atexit(close_output); |
| } |
| |
| static void log_report() { |
| int i; |
| gpr_once_init(&g_once_init, init_output); |
| for (i = 0; i < g_count; i++) { |
| grpc_timer_entry *entry = &(g_log[i]); |
| fprintf(output_file, |
| "{\"t\": %ld.%09d, \"thd\": \"%p\", \"type\": \"%c\", \"tag\": " |
| "\"%s\", \"file\": \"%s\", \"line\": %d}\n", |
| entry->tm.tv_sec, entry->tm.tv_nsec, |
| (void *)(gpr_intptr)gpr_thd_currentid(), entry->type, entry->tagstr, |
| entry->file, entry->line); |
| } |
| |
| /* Now clear out the log */ |
| g_count = 0; |
| } |
| |
| static void grpc_timers_log_add(int tag, const char *tagstr, marker_type type, |
| void *id, const char *file, int line) { |
| grpc_timer_entry *entry; |
| |
| /* TODO (vpai) : Improve concurrency */ |
| if (g_count == MAX_COUNT) { |
| log_report(); |
| } |
| |
| entry = &g_log[g_count++]; |
| |
| entry->tm = gpr_now(GPR_CLOCK_PRECISE); |
| entry->tagstr = tagstr; |
| entry->type = type; |
| entry->file = file; |
| entry->line = line; |
| } |
| |
| /* Latency profiler API implementation. */ |
| void grpc_timer_add_mark(int tag, const char *tagstr, void *id, |
| const char *file, int line) { |
| if (tag < GRPC_PTAG_IGNORE_THRESHOLD) { |
| grpc_timers_log_add(tag, tagstr, MARK, id, file, line); |
| } |
| } |
| |
| void grpc_timer_add_important_mark(int tag, const char *tagstr, void *id, |
| const char *file, int line) { |
| if (tag < GRPC_PTAG_IGNORE_THRESHOLD) { |
| grpc_timers_log_add(tag, tagstr, IMPORTANT, id, file, line); |
| } |
| } |
| |
| void grpc_timer_begin(int tag, const char *tagstr, void *id, const char *file, |
| int line) { |
| if (tag < GRPC_PTAG_IGNORE_THRESHOLD) { |
| grpc_timers_log_add(tag, tagstr, BEGIN, id, file, line); |
| } |
| } |
| |
| void grpc_timer_end(int tag, const char *tagstr, void *id, const char *file, |
| int line) { |
| if (tag < GRPC_PTAG_IGNORE_THRESHOLD) { |
| grpc_timers_log_add(tag, tagstr, END, id, file, line); |
| } |
| } |
| |
| /* Basic profiler specific API functions. */ |
| void grpc_timers_global_init(void) {} |
| |
| void grpc_timers_global_destroy(void) {} |
| |
| #else /* !GRPC_BASIC_PROFILER */ |
| void grpc_timers_global_init(void) {} |
| |
| void grpc_timers_global_destroy(void) {} |
| #endif /* GRPC_BASIC_PROFILER */ |