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Fix typos in comment.

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Plus some tiny wordsmithing of not-quite-typos.
This commit is contained in:
Heikki Linnakangas 2015-01-13 10:29:16 +02:00
parent 7391e2513f
commit 3dfce37627
1 changed files with 5 additions and 5 deletions
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10
src/include/port/atomics/fallback.h
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@ -38,12 +38,12 @@ extern void pg_spinlock_barrier(void);
#ifndef pg_compiler_barrier_impl
/*
* If the compiler/arch combination does not provide compiler barriers,
* provide a fallback. That fallback simply consists out of a function call
* into a externally defined function. That should guarantee compiler barrier
* provide a fallback. The fallback simply consists of a function call into
* an externally defined function. That should guarantee compiler barrier
* semantics except for compilers that do inter translation unit/global
* optimization - those better provide an actual compiler barrier.
*
* Using a native compiler barrier for sure is a lot faster than this...
* A native compiler barrier for sure is a lot faster than this...
*/
#define PG_HAVE_COMPILER_BARRIER_EMULATION
extern void pg_extern_compiler_barrier(void);
@ -52,7 +52,7 @@ extern void pg_extern_compiler_barrier(void);
/*
* If we have atomics implementation for this platform fall back to providing
* If we have atomics implementation for this platform, fall back to providing
* the atomics API using a spinlock to protect the internal state. Possibly
* the spinlock implementation uses semaphores internally...
*
@ -122,7 +122,7 @@ pg_atomic_unlocked_test_flag_impl(volatile pg_atomic_flag *ptr)
/*
* Can't do this efficiently in the semaphore based implementation - we'd
* have to try to acquire the semaphore - so always return true. That's
* correct, because this is only an unlocked test anyway.Do this in the
* correct, because this is only an unlocked test anyway. Do this in the
* header so compilers can optimize the test away.
*/
return true;