Line data    Source code

       1             : /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
       2             : /* vim: set ts=8 sts=2 et sw=2 tw=80: */
       3             : /* This Source Code Form is subject to the terms of the Mozilla Public
       4             :  * License, v. 2.0. If a copy of the MPL was not distributed with this
       5             :  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
       6             : 
       7             : #include "LinuxUtils.h"
       8             : 
       9             : #if defined(XP_LINUX)
      10             : 
      11             : #include <ctype.h>
      12             : #include <stdio.h>
      13             : 
      14             : #include "nsPrintfCString.h"
      15             : 
      16             : namespace mozilla {
      17             : 
      18             : void
      19           0 : LinuxUtils::GetThreadName(pid_t aTid, nsACString& aName)
      20             : {
      21           0 :   aName.Truncate();
      22           0 :   if (aTid <= 0) {
      23           0 :     return;
      24             :   }
      25             : 
      26           0 :   const size_t kBuffSize = 16; // 15 chars max + '\n'
      27             :   char buf[kBuffSize];
      28           0 :   nsPrintfCString path("/proc/%d/comm", aTid);
      29           0 :   FILE* fp = fopen(path.get(), "r");
      30           0 :   if (!fp) {
      31             :     // The fopen could also fail if the thread exited before we got here.
      32           0 :     return;
      33             :   }
      34             : 
      35           0 :   size_t len = fread(buf, 1, kBuffSize, fp);
      36           0 :   fclose(fp);
      37             : 
      38             :   // No need to strip the '\n', since isspace() includes it.
      39           0 :   while (len > 0 &&
      40           0 :          (isspace(buf[len - 1]) || isdigit(buf[len - 1]) ||
      41           0 :           buf[len - 1] == '#' || buf[len - 1] == '_')) {
      42           0 :     --len;
      43             :   }
      44             : 
      45           0 :   aName.Assign(buf, len);
      46             : }
      47             : 
      48             : }
      49             : 
      50             : #endif // XP_LINUX