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| author | Andrew W. Nosenko <andrew.w.nosenko@gmail.com> | 2012-04-27 17:05:32 +0300 |
|---|---|---|
| committer | Martin Sustrik <sustrik@250bpm.com> | 2012-04-29 07:30:42 +0200 |
| commit | 8aafb03dee4520ea62cd0cc0c78a9b958ec5ae18 (patch) | |
| tree | c3120eb3294510d7f1ddef683b1e3d0c6aaae06f /acinclude.m4 | |
| parent | cdbaa67ff5fdb7cebab670e6f7906d9e81ae7f0a (diff) | |
atomic: revisit the atomic operation checks and their usage
* configure.ac:
Check for working Solaris/NetBSD-style atomic.h independly on OS.
Add check for GCC-style __sync_*() builtins.
New defines: XS_ATOMIC_GCC_SYNC, XS_ATOMIC_SOLARIS.
Removed define: XS_FORCE_MUTEXES.
* src/atomic_counter.hpp:
(atomic_counter_t::add):
(atomic_counter_t::sub):
* src/atomic_ptr.hpp:
(atomic_ptr_t::xchg):
(atomic_ptr_t::cas):
Use result of these checks.
Preference order:
1. GCC-style __sync_*() builtins
2. Inline asm (x86, x86-64, armv7a)
3. Solaris/NetBSD-style atomic.h, Windows-specific API
4. Fallback to mutex-based implementation
Diffstat (limited to 'acinclude.m4')
0 files changed, 0 insertions, 0 deletions