int main(int argc, char **argv)
{
const char *usage = "%s string\n\n"
" Returns the geopm_hash() of the input string.\n"
" this is useful for determining the region name\n"
" from the region_id printed in the trace.\n"
" Note the mpi-runtime and epoch regions have\n"
" special region IDs:\n"
" mpi-runtime: 4611686018427387904\n"
" epoch: 9223372036854775808\n\n";
if (argc == 1 ||
strncmp("-h", argv[1], strlen("-h")) == 0 ||
strncmp("--help", argv[1], strlen("--help")) == 0) {
printf(usage, argv[0]);
}
else {
printf("%llu\n", (unsigned long long)geopm_crc32_str(0, argv[1]));
}
return 0;
}
uint64_t ProfileTable::key(const std::string &name)
{
uint64_t result = 0;
int err = pthread_mutex_lock(&(m_key_map_lock));
if (err) {
throw Exception("ProfileTable::key(): pthread_mutex_lock()", err, __FILE__, __LINE__);
}
auto key_map_it = m_key_map.find(name);
err = pthread_mutex_unlock(&(m_key_map_lock));
if (err) {
throw Exception("ProfileTable::key(): pthread_mutex_unlock()", err, __FILE__, __LINE__);
}
if (key_map_it != m_key_map.end()) {
result = key_map_it->second;
}
else {
result = geopm_crc32_str(0, (char *)(&name.front()));
if (!result) {
throw Exception("ProfileTable::key(): CRC 32 hashed to zero!", GEOPM_ERROR_RUNTIME, __FILE__, __LINE__);
}
err = pthread_mutex_lock(&(m_key_map_lock));
if (err) {
throw Exception("ProfileTable::key(): pthread_mutex_lock()", err, __FILE__, __LINE__);
}
if (m_key_set.find(result) != m_key_set.end()) {
throw Exception("ProfileTable::key(): String hash collision", GEOPM_ERROR_RUNTIME, __FILE__, __LINE__);
}
m_key_set.insert(result);
m_key_map.insert(std::pair<const std::string, uint64_t>(name, result));
m_key_map_last = m_key_map.begin();
err = pthread_mutex_unlock(&(m_key_map_lock));
if (err) {
throw Exception("ProfileTable::key(): pthread_mutex_unlock()", err, __FILE__, __LINE__);
}
}
return result;
}
