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GH-93841: Allow stats to be turned on and off, cleared and dumped at runtime. (GH-93843)

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Mark Shannon 2022-06-21 15:40:54 +01:00 • committed by GitHub
parent c7a79bb036
commit 6f8875eba3
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GPG key ID: 4AEE18F83AFDEB23
7 changed files with 212 additions and 22 deletions
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24
Python/specialize.c
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@ -33,7 +33,8 @@ uint8_t _PyOpcode_Adaptive[256] = {
Py_ssize_t _Py_QuickenedCount = 0;
#ifdef Py_STATS
PyStats _py_stats = { 0 };
PyStats _py_stats_struct = { 0 };
PyStats *_py_stats = &_py_stats_struct;
#define ADD_STAT_TO_DICT(res, field) \
do { \
@ -93,7 +94,7 @@ add_stat_dict(
int opcode,
const char *name) {
SpecializationStats *stats = &_py_stats.opcode_stats[opcode].specialization;
SpecializationStats *stats = &_py_stats_struct.opcode_stats[opcode].specialization;
PyObject *d = stats_to_dict(stats);
if (d == NULL) {
return -1;
@ -209,9 +210,18 @@ print_stats(FILE *out, PyStats *stats) {
print_object_stats(out, &stats->object_stats);
}
void
_Py_StatsClear(void)
{
_py_stats_struct = (PyStats) { 0 };
}
void
_Py_PrintSpecializationStats(int to_file)
{
if (_py_stats == NULL) {
return;
}
FILE *out = stderr;
if (to_file) {
/* Write to a file instead of stderr. */
@ -242,7 +252,7 @@ _Py_PrintSpecializationStats(int to_file)
else {
fprintf(out, "Specialization stats:\n");
}
print_stats(out, &_py_stats);
print_stats(out, _py_stats);
if (out != stderr) {
fclose(out);
}
@ -250,8 +260,12 @@ _Py_PrintSpecializationStats(int to_file)
#ifdef Py_STATS
#define SPECIALIZATION_FAIL(opcode, kind) _py_stats.opcode_stats[opcode].specialization.failure_kinds[kind]++
#define SPECIALIZATION_FAIL(opcode, kind) \
do { \
if (_py_stats) { \
_py_stats->opcode_stats[opcode].specialization.failure_kinds[kind]++; \
} \
} while (0)
#endif
#endif