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#include <cstdlib>
#include <iomanip>
#include <sstream>
#include <string>
#include <utility>
#include <vector>
#include <ATen/core/function.h>
#include <c10/util/Exception.h>
#include <c10/util/StringUtil.h>
#include <torch/csrc/jit/api/function_impl.h>
#include <torch/csrc/jit/jit_opt_limit.h>
namespace torch {
namespace jit {
std::unordered_map<std::string, int64_t>& passes_to_current_counter() {
static std::unordered_map<std::string, int64_t> passes_to_current_counter;
return passes_to_current_counter;
}
static int parseOptLimit(const std::string& opt_limit) {
try {
int64_t n = c10::stoi(opt_limit);
return n;
} catch (...) {
return -1;
}
}
static std::unordered_map<std::string, int64_t> parseJITOptLimitOption(
const char* option) {
std::stringstream in_ss;
if (option) {
in_ss << option;
}
std::unordered_map<std::string, int64_t> passes_to_opt_limits;
std::string line;
while (std::getline(in_ss, line, ':')) {
if (line.size() == 0) {
continue;
}
auto index_at = line.find_last_of('=');
auto pass_name = line.substr(0, index_at);
pass_name = c10::detail::ExcludeFileExtension(pass_name);
auto opt_limit = parseOptLimit(line.substr(index_at + 1));
passes_to_opt_limits.insert({pass_name, opt_limit});
}
return passes_to_opt_limits;
}
bool opt_limit(const char* pass_name) {
static const char* opt_limit = std::getenv("PYTORCH_JIT_OPT_LIMIT");
// if nothing is provided, let's allow everything
if (!opt_limit) {
return true;
}
static const std::unordered_map<std::string, int64_t> passes_to_opt_limits =
parseJITOptLimitOption(opt_limit);
std::string pass{pass_name};
pass = c10::detail::StripBasename(pass);
pass = c10::detail::ExcludeFileExtension(pass);
auto opt_limit_it = passes_to_opt_limits.find(pass);
if (opt_limit_it == passes_to_opt_limits.end()) {
return true;
}
auto current_count_it = passes_to_current_counter().find(pass);
if (current_count_it == passes_to_current_counter().end()) {
passes_to_current_counter().insert({pass, 0});
}
current_count_it = passes_to_current_counter().find(pass);
if (current_count_it->second >= opt_limit_it->second) {
return false;
}
current_count_it->second++;
return true;
}
} // namespace jit
} // namespace torch
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