newlib/winsup/cygwin/cygmalloc.h
Corinna Vinschen 06ac671811 Only define __getreent inline function when building newlib or Cygwin
Commit 6f3943b erroneously removed the `#ifdef _COMPILING_NEWLIB'
guarding the __getreent inline function.  This patch ignored the
fact that config.h is included when building applications, and the
code in question requires internal, auto-generated headers to be
available which are not exposed to user-space.

Reinstantiate defined(_COMPILING_NEWLIB) test and alternatively
check for defined (__INSIDE_CYGWIN__), otherwise we'd have to
reinstantiate the __getreent macro in cygtls.h which is really
confusing.

While testing it turned out that a low number of source codes inside
Cygwin won't see the inline __getreent due to a missing __INSIDE_CYGWIN__
definition.  For malloc.cc this was actually deliberate to get different
definitions from including cygmalloc.h.  Change this by defining
__INSIDE_CYGWIN__ in malloc.cc but changing the test in cygmalloc.h
to test for defined(DLMALLOC_VERSION).  This might need a change if we
ever get around to replace dlmalloc with a newer, more threading-aware
malloc implementation.

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2016-08-20 17:14:55 +02:00

48 lines
1.1 KiB
C

/* cygmalloc.h: cygwin DLL malloc stuff
This file is part of Cygwin.
This software is a copyrighted work licensed under the terms of the
Cygwin license. Please consult the file "CYGWIN_LICENSE" for
details. */
#ifdef __cplusplus
extern "C" {
#endif
#include "regparm.h"
void __reg1 dlfree (void *p);
void __reg1 *dlmalloc (size_t size);
void __reg2 *dlrealloc (void *p, size_t size);
void __reg2 *dlcalloc (size_t nmemb, size_t size);
void __reg2 *dlmemalign (size_t alignment, size_t bytes);
void __reg1 *dlvalloc (size_t bytes);
size_t __reg1 dlmalloc_usable_size (void *p);
int __reg1 dlmalloc_trim (size_t);
int __reg2 dlmallopt (int p, int v);
void dlmalloc_stats ();
#ifdef __x86_64__
#define MALLOC_ALIGNMENT ((size_t)16U)
#endif
#if defined (DLMALLOC_VERSION) /* Building malloc.cc */
extern "C" void __set_ENOMEM ();
void *mmap64 (void *, size_t, int, int, int, off_t);
# define mmap mmap64
# define MALLOC_FAILURE_ACTION __set_ENOMEM ()
# define USE_DL_PREFIX 1
#elif defined (__INSIDE_CYGWIN__)
# define __malloc_lock() mallock.acquire ()
# define __malloc_unlock() mallock.release ()
extern muto mallock;
#endif
#ifdef __cplusplus
}
#endif