Line data    Source code

       1             : /*
       2             :  *
       3             :  * Copyright 2015, Google Inc.
       4             :  * All rights reserved.
       5             :  *
       6             :  * Redistribution and use in source and binary forms, with or without
       7             :  * modification, are permitted provided that the following conditions are
       8             :  * met:
       9             :  *
      10             :  *     * Redistributions of source code must retain the above copyright
      11             :  * notice, this list of conditions and the following disclaimer.
      12             :  *     * Redistributions in binary form must reproduce the above
      13             :  * copyright notice, this list of conditions and the following disclaimer
      14             :  * in the documentation and/or other materials provided with the
      15             :  * distribution.
      16             :  *     * Neither the name of Google Inc. nor the names of its
      17             :  * contributors may be used to endorse or promote products derived from
      18             :  * this software without specific prior written permission.
      19             :  *
      20             :  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
      21             :  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
      22             :  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
      23             :  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
      24             :  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
      25             :  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
      26             :  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
      27             :  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
      28             :  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
      29             :  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
      30             :  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
      31             :  *
      32             :  */
      33             : 
      34             : #include <grpc/support/port_platform.h>
      35             : 
      36             : #ifdef GRPC_BASIC_PROFILER
      37             : 
      38             : #include "src/core/profiling/timers.h"
      39             : 
      40             : #include <grpc/support/alloc.h>
      41             : #include <grpc/support/log.h>
      42             : #include <grpc/support/time.h>
      43             : #include <grpc/support/sync.h>
      44             : #include <grpc/support/thd.h>
      45             : #include <stdio.h>
      46             : 
      47             : typedef enum {
      48             :   BEGIN = '{',
      49             :   END = '}',
      50             :   MARK = '.',
      51             :   IMPORTANT = '!'
      52             : } marker_type;
      53             : 
      54             : typedef struct grpc_timer_entry {
      55             :   gpr_timespec tm;
      56             :   int tag;
      57             :   const char *tagstr;
      58             :   marker_type type;
      59             :   void *id;
      60             :   const char *file;
      61             :   int line;
      62             : } grpc_timer_entry;
      63             : 
      64             : #define MAX_COUNT (1024 * 1024 / sizeof(grpc_timer_entry))
      65             : 
      66             : static __thread grpc_timer_entry log[MAX_COUNT];
      67             : static __thread int count;
      68             : 
      69             : static void log_report() {
      70             :   int i;
      71             :   for (i = 0; i < count; i++) {
      72             :     grpc_timer_entry *entry = &(log[i]);
      73             :     printf("GRPC_LAT_PROF %ld.%09d  %p %c %d(%s) %p %s %d\n", entry->tm.tv_sec,
      74             :            entry->tm.tv_nsec, (void *)(gpr_intptr)gpr_thd_currentid(),
      75             :            entry->type, entry->tag, entry->tagstr, entry->id, entry->file,
      76             :            entry->line);
      77             :   }
      78             : 
      79             :   /* Now clear out the log */
      80             :   count = 0;
      81             : }
      82             : 
      83             : static void grpc_timers_log_add(int tag, const char *tagstr, marker_type type,
      84             :                                 void *id, const char *file, int line) {
      85             :   grpc_timer_entry *entry;
      86             : 
      87             :   /* TODO (vpai) : Improve concurrency */
      88             :   if (count == MAX_COUNT) {
      89             :     log_report();
      90             :   }
      91             : 
      92             :   entry = &log[count++];
      93             : 
      94             :   entry->tm = gpr_now(GPR_CLOCK_PRECISE);
      95             :   entry->tag = tag;
      96             :   entry->tagstr = tagstr;
      97             :   entry->type = type;
      98             :   entry->id = id;
      99             :   entry->file = file;
     100             :   entry->line = line;
     101             : }
     102             : 
     103             : /* Latency profiler API implementation. */
     104             : void grpc_timer_add_mark(int tag, const char *tagstr, void *id,
     105             :                          const char *file, int line) {
     106             :   if (tag < GRPC_PTAG_IGNORE_THRESHOLD) {
     107             :     grpc_timers_log_add(tag, tagstr, MARK, id, file, line);
     108             :   }
     109             : }
     110             : 
     111             : void grpc_timer_add_important_mark(int tag, const char *tagstr, void *id,
     112             :                                    const char *file, int line) {
     113             :   if (tag < GRPC_PTAG_IGNORE_THRESHOLD) {
     114             :     grpc_timers_log_add(tag, tagstr, IMPORTANT, id, file, line);
     115             :   }
     116             : }
     117             : 
     118             : void grpc_timer_begin(int tag, const char *tagstr, void *id, const char *file,
     119             :                       int line) {
     120             :   if (tag < GRPC_PTAG_IGNORE_THRESHOLD) {
     121             :     grpc_timers_log_add(tag, tagstr, BEGIN, id, file, line);
     122             :   }
     123             : }
     124             : 
     125             : void grpc_timer_end(int tag, const char *tagstr, void *id, const char *file,
     126             :                     int line) {
     127             :   if (tag < GRPC_PTAG_IGNORE_THRESHOLD) {
     128             :     grpc_timers_log_add(tag, tagstr, END, id, file, line);
     129             :   }
     130             : }
     131             : 
     132             : /* Basic profiler specific API functions. */
     133             : void grpc_timers_global_init(void) {}
     134             : 
     135             : void grpc_timers_global_destroy(void) {}
     136             : 
     137             : #else  /* !GRPC_BASIC_PROFILER */
     138        2502 : void grpc_timers_global_init(void) {}
     139             : 
     140        2502 : void grpc_timers_global_destroy(void) {}
     141             : #endif /* GRPC_BASIC_PROFILER */