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authorAdhemerval Zanella <adhemerval.zanella@linaro.org>2017-11-09 19:41:02 -0200
committerAdhemerval Zanella <adhemerval.zanella@linaro.org>2019-11-26 13:53:36 +0000
commit7df8af43ad1cd8ce527444de50bee6f35eebe071 (patch)
treeebc286926fa33ca713f4cc4ad386aef0d094ae62 /sysdeps/arm
parent1c3f9acf1f1f75faa7a28bf39af64afda93839ac (diff)
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nptl: Add struct_rwlock.h
This patch adds a new generic __pthread_rwlock_arch_t definition meant to be used by new ports. Its layout mimics the current usage on some 64 bits ports and it allows some ports to use the generic definition. The arch __pthread_rwlock_arch_t definition is moved from pthreadtypes-arch.h to another arch-specific header (struct_rwlock.h). Also the static intialization macro for pthread_rwlock_t is set to use an arch defined on (__PTHREAD_RWLOCK_INITIALIZER) which simplifies its implementation. The default pthread_rwlock_t layout differs from current ports with: 1. Internal layout is the same for 32 bits and 64 bits. 2. Internal flag is an unsigned short so it should not required additional padding to align for word boundary (if it is the case for the ABI). Checked with a build on affected abis. Change-Id: I776a6a986c23199929d28a3dcd30272db21cd1d0
Diffstat (limited to 'sysdeps/arm')
-rw-r--r--sysdeps/arm/nptl/bits/pthreadtypes-arch.h26
1 files changed, 0 insertions, 26 deletions
diff --git a/sysdeps/arm/nptl/bits/pthreadtypes-arch.h b/sysdeps/arm/nptl/bits/pthreadtypes-arch.h
index 5ae7d0d..339956c 100644
--- a/sysdeps/arm/nptl/bits/pthreadtypes-arch.h
+++ b/sysdeps/arm/nptl/bits/pthreadtypes-arch.h
@@ -33,30 +33,4 @@
#define __LOCK_ALIGNMENT
#define __ONCE_ALIGNMENT
-struct __pthread_rwlock_arch_t
-{
- unsigned int __readers;
- unsigned int __writers;
- unsigned int __wrphase_futex;
- unsigned int __writers_futex;
- unsigned int __pad3;
- unsigned int __pad4;
-#if __BYTE_ORDER == __BIG_ENDIAN
- unsigned char __pad1;
- unsigned char __pad2;
- unsigned char __shared;
- /* FLAGS must stay at this position in the structure to maintain
- binary compatibility. */
- unsigned char __flags;
-#else
- /* FLAGS must stay at this position in the structure to maintain
- binary compatibility. */
- unsigned char __flags;
- unsigned char __shared;
- unsigned char __pad1;
- unsigned char __pad2;
-#endif
- int __cur_writer;
-};
-
#endif /* bits/pthreadtypes.h */