1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
|
/*
*
* 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 = '.' } marker_type;
typedef struct gpr_timer_entry {
gpr_timespec tm;
const char *tagstr;
const char *file;
int line;
char type;
gpr_uint8 important;
} gpr_timer_entry;
#define MAX_COUNT (1024 * 1024 / sizeof(gpr_timer_entry))
static __thread gpr_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++) {
gpr_timer_entry *entry = &(g_log[i]);
fprintf(output_file,
"{\"t\": %ld.%09d, \"thd\": \"%p\", \"type\": \"%c\", \"tag\": "
"\"%s\", \"file\": \"%s\", \"line\": %d, \"imp\": %d}\n",
entry->tm.tv_sec, entry->tm.tv_nsec,
(void *)(gpr_intptr)gpr_thd_currentid(), entry->type, entry->tagstr,
entry->file, entry->line, entry->important);
}
/* Now clear out the log */
g_count = 0;
}
static void gpr_timers_log_add(const char *tagstr, marker_type type,
int important, const char *file, int line) {
gpr_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;
entry->important = important != 0;
}
/* Latency profiler API implementation. */
void gpr_timer_add_mark(const char *tagstr, int important, const char *file,
int line) {
gpr_timers_log_add(tagstr, MARK, important, file, line);
}
void gpr_timer_begin(const char *tagstr, int important, const char *file,
int line) {
gpr_timers_log_add(tagstr, BEGIN, important, file, line);
}
void gpr_timer_end(const char *tagstr, int important, const char *file,
int line) {
gpr_timers_log_add(tagstr, END, important, file, line);
}
/* Basic profiler specific API functions. */
void gpr_timers_global_init(void) {}
void gpr_timers_global_destroy(void) {}
#else /* !GRPC_BASIC_PROFILER */
void gpr_timers_global_init(void) {}
void gpr_timers_global_destroy(void) {}
#endif /* GRPC_BASIC_PROFILER */
|
