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Diffstat (limited to 'memory/replace/logalloc/FdPrintf.h')
| -rw-r--r-- | memory/replace/logalloc/FdPrintf.h | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/memory/replace/logalloc/FdPrintf.h b/memory/replace/logalloc/FdPrintf.h new file mode 100644 index 0000000000..f390d57ed5 --- /dev/null +++ b/memory/replace/logalloc/FdPrintf.h @@ -0,0 +1,27 @@ +/* -*- 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/. */ + +#ifndef __FdPrintf_h__ +#define __FdPrintf_h__ + +/* We can't use libc's (f)printf because it would reenter in replace_malloc, + * So use a custom and simplified version. Only %p, %zu, %s and %% are + * supported, %zu, %s, support width specifiers. + * + * /!\ This function used a fixed-size internal buffer. The caller is + * expected to not use a format string that may overflow. + * The aFd argument is a file descriptor on UNIX and a native win32 file + * handle on Windows (from CreateFile). We can't use the windows POSIX + * APIs is that they don't support O_APPEND in a multi-process-safe way, + * while CreateFile does. + */ +extern void FdPrintf(intptr_t aFd, const char* aFormat, ...) +#ifdef __GNUC__ + __attribute__((format(printf, 2, 3))) +#endif + ; + +#endif /* __FdPrintf_h__ */ |