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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "LinuxUtils.h"
#if defined(XP_LINUX)
#include <ctype.h>
#include <stdio.h>
#include "nsPrintfCString.h"
namespace mozilla {
void
LinuxUtils::GetThreadName(pid_t aTid, nsACString& aName)
{
aName.Truncate();
if (aTid <= 0) {
return;
}
const size_t kBuffSize = 16; // 15 chars max + '\n'
char buf[kBuffSize];
nsPrintfCString path("/proc/%d/comm", aTid);
FILE* fp = fopen(path.get(), "r");
if (!fp) {
// The fopen could also fail if the thread exited before we got here.
return;
}
size_t len = fread(buf, 1, kBuffSize, fp);
fclose(fp);
// No need to strip the '\n', since isspace() includes it.
while (len > 0 &&
(isspace(buf[len - 1]) || isdigit(buf[len - 1]) ||
buf[len - 1] == '#' || buf[len - 1] == '_')) {
--len;
}
aName.Assign(buf, len);
}
}
#endif // XP_LINUX
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