Function expandWildcardPath

flow/Platform.actor.cpp:1322–1364

#if defined(_WIN32)
std::vector<std::string> expandWildcardPath(const char* wildcardPath) {
	PDH_STATUS Status;
	char* EndOfPaths;
	char* Paths = nullptr;
	DWORD BufferSize = 0;
	std::vector<std::string> results;

	Status = PdhExpandCounterPath(wildcardPath, Paths, &BufferSize);
	if (Status != PDH_MORE_DATA) {
		TraceEvent(SevWarn, "PdhExpandCounterPathError")
		    .detail("Reason", "Expand Path call made no sense")
		    .detail("Status", Status);
		goto Cleanup;
	}

	Paths = (char*)malloc(BufferSize);
	Status = PdhExpandCounterPath(wildcardPath, Paths, &BufferSize);

	if (Status != ERROR_SUCCESS) {
		TraceEvent(SevWarn, "PdhExpandCounterPathError")
		    .detail("Reason", "Expand Path call failed")
		    .detail("Status", Status);
		goto Cleanup;
	}

	if (Paths == nullptr) {
		TraceEvent("WindowsPdhExpandCounterPathError").detail("Reason", "Path could not be expanded");
		goto Cleanup;
	}

	EndOfPaths = Paths + BufferSize;

	for (char* p = Paths; ((p != EndOfPaths) && (*p != '\0')); p += strlen(p) + 1) {
		results.push_back(p);
		// printf("Counter: %s\n", p);
	}

Cleanup:
	if (Paths) {
		free(Paths);
	}
	return results;
}

std::vector<HCOUNTER> addCounters(HQUERY Query, const char* path) {
	std::vector<HCOUNTER> counters;