// Read env vars at startup, so as to set:
// sUnwindInterval, sProfileEntries, sUnwindStackScan.
void read_profiler_env_vars()
{
/* Set defaults */
sUnwindInterval = 0; /* We'll have to look elsewhere */
sProfileEntries = 0;
const char* interval = getenv(PROFILER_INTERVAL);
const char* entries = getenv(PROFILER_ENTRIES);
const char* scanCount = getenv(PROFILER_STACK);
if (getenv(PROFILER_HELP)) {
// Enable verbose output
moz_profiler_set_verbosity(ProfilerVerbosity::VERBOSE);
profiler_usage();
// Now force the next enquiry of moz_profiler_verbose to re-query
// env var MOZ_PROFILER_VERBOSE.
moz_profiler_set_verbosity(ProfilerVerbosity::UNCHECKED);
}
if (!set_profiler_interval(interval) ||
!set_profiler_entries(entries) ||
!set_profiler_scan(scanCount)) {
profiler_usage();
} else {
LOG( "SPS:");
LOGF("SPS: Sampling interval = %d ms (zero means \"platform default\")",
(int)sUnwindInterval);
LOGF("SPS: Entry store size = %d (zero means \"platform default\")",
(int)sProfileEntries);
LOGF("SPS: UnwindStackScan = %d (max dubious frames per unwind).",
(int)sUnwindStackScan);
LOG( "SPS:");
}
}
// Read env vars at startup, so as to set sUnwindMode and sInterval.
void read_profiler_env_vars()
{
bool nativeAvail = is_native_unwinding_avail();
/* Set defaults */
sUnwindMode = nativeAvail ? UnwCOMBINED : UnwPSEUDO;
sUnwindInterval = 0; /* We'll have to look elsewhere */
sProfileEntries = 0;
const char* stackMode = PR_GetEnv(PROFILER_MODE);
const char* interval = PR_GetEnv(PROFILER_INTERVAL);
const char* entries = PR_GetEnv(PROFILER_ENTRIES);
const char* scanCount = PR_GetEnv(PROFILER_STACK);
if (!set_profiler_mode(stackMode) ||
!set_profiler_interval(interval) ||
!set_profiler_entries(entries) ||
!set_profiler_scan(scanCount)) {
profiler_usage();
} else {
LOG( "SPS:");
LOGF("SPS: Unwind mode = %s", name_UnwMode(sUnwindMode));
LOGF("SPS: Sampling interval = %d ms (zero means \"platform default\")",
(int)sUnwindInterval);
LOGF("SPS: Entry store size = %d (zero means \"platform default\")",
(int)sProfileEntries);
LOGF("SPS: UnwindStackScan = %d (max dubious frames per unwind).",
(int)sUnwindStackScan);
LOG( "SPS: Use env var MOZ_PROFILER_MODE=help for further information.");
LOG( "SPS:");
}
}
