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flesh out sysconf(3) and the _POSIX_* constants

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Bug: 17571891
Change-Id: I81036615486bde65969ae5662587fcc88348474e
This commit is contained in:
Yabin Cui
2014-11-19 19:49:14 -08:00
parent 27aa9c5b50
commit 1c19194c9d
5 changed files with 530 additions and 265 deletions
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28
libc/include/sys/limits.h
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@@ -115,31 +115,13 @@
/* Bionic-specific definitions */
#define _POSIX_VERSION 200112L /* Posix C language bindings version */
#define _POSIX_VERSION 200809L /* Posix C language bindings version */
#define _POSIX2_VERSION -1 /* we don't support Posix command-line tools */
#define _POSIX2_C_VERSION _POSIX_VERSION
#define _XOPEN_VERSION 500 /* by Posix definition */
#define _XOPEN_XCU_VERSION -1 /* we don't support command-line utilities */
#define _XOPEN_VERSION 700 /* by Posix definition */
/* tell what we implement legacy stuff when appropriate */
#if _POSIX_VERSION > 0
#define _XOPEN_XPG2 1
#define _XOPEN_XPG3 1
#define _XOPEN_XPG4 1
#define _XOPEN_UNIX 1
#endif
#define _XOPEN_ENH_I18N -1 /* we don't support internationalization in the C library */
#define _XOPEN_CRYPT -1 /* don't support X/Open Encryption */
#define _XOPEN_LEGACY -1 /* don't claim we support these, we have some of them but not all */
#define _XOPEN_REALTIME -1 /* we don't support all these functions */
#define _XOPEN_REALTIME_THREADS -1 /* same here */
#define _POSIX_THREAD_DESTRUCTOR_ITERATIONS 4 /* the minimum mandated by POSIX */
#define PTHREAD_DESTRUCTOR_ITERATIONS _POSIX_THREAD_DESTRUCTOR_ITERATIONS
#define _POSIX_THREAD_KEYS_MAX 128 /* the minimum mandated by POSIX */
#define PTHREAD_KEYS_MAX _POSIX_THREAD_KEYS_MAX
#define _POSIX_THREAD_THREADS_MAX 64 /* the minimum mandated by POSIX */
#define PTHREAD_THREADS_MAX /* bionic has no specific limit */
#define PTHREAD_DESTRUCTOR_ITERATIONS 4 // >= _POSIX_THREAD_DESTRUCTOR_ITERATIONS
#define PTHREAD_KEYS_MAX 128 // >= _POSIX_THREAD_KEYS_MAX
#define PTHREAD_THREADS_MAX 2048 // bionic has no specific limit
#endif