memory/mozalloc/mozalloc_oom.h

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
   2  * vim: sw=2 ts=4 et :
   3  */
   4 /* This Source Code Form is subject to the terms of the Mozilla Public
   5  * License, v. 2.0. If a copy of the MPL was not distributed with this
   6  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   7
   8 #ifndef mozilla_mozalloc_oom_h
   9 #define mozilla_mozalloc_oom_h
  10
  11 #include "mozalloc.h"
  12
  13 /**
  14  * Called when memory is critically low.  Returns iff it was able to
  15  * remedy the critical memory situation; if not, it will abort().
  16  */
  17 #ifdef __wasm__
  18 __attribute__((import_module("env")))
  19 __attribute__((import_name("mozalloc_handle_oom")))
  20 #  if defined(__clang__) && (__clang_major__ < 11)
  21 __attribute__((weak))
  22 #  endif
  23 #endif
  24 MFBT_API void
  25 mozalloc_handle_oom(size_t requestedSize);
  26
  27 extern MFBT_DATA size_t gOOMAllocationSize;
  28
  29 /* TODO: functions to query system memory usage and register
  30  * critical-memory handlers. */
  31
  32 #endif /* ifndef mozilla_mozalloc_oom_h */