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Use stdatomic instead of gcc-internal atomics

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The __atomic operations are internal to gcc and not necessarily supported
by all c11 compilers. Use the atomics in stdatomic instead.

Signed-off-by: Nathan Hjelm <hjelmn@google.com>
This commit is contained in:
Nathan Hjelm
2020-12-16 20:57:57 -07:00
parent 1a08aa84d9
commit eed8a371ea
2 changed files with 7 additions and 6 deletions
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11
libusb/libusbi.h
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@@ -103,11 +103,12 @@ typedef volatile LONG usbi_atomic_t;
#define usbi_atomic_inc(a) InterlockedIncrement((a))
#define usbi_atomic_dec(a) InterlockedDecrement((a))
#else
typedef long usbi_atomic_t;
#define usbi_atomic_load(a) __atomic_load_n((a), __ATOMIC_SEQ_CST)
#define usbi_atomic_store(a, v) __atomic_store_n((a), (v), __ATOMIC_SEQ_CST)
#define usbi_atomic_inc(a) __atomic_add_fetch((a), 1, __ATOMIC_SEQ_CST)
#define usbi_atomic_dec(a) __atomic_sub_fetch((a), 1, __ATOMIC_SEQ_CST)
#include <stdatomic.h>
typedef atomic_long usbi_atomic_t;
#define usbi_atomic_load(a) atomic_load((a))
#define usbi_atomic_store(a, v) atomic_store((a), (v))
#define usbi_atomic_inc(a) (atomic_fetch_add((a), 1) + 1)
#define usbi_atomic_dec(a) (atomic_fetch_add((a), -1) - 1)
#endif
/* Internal abstractions for event handling and thread synchronization */

2
libusb/version_nano.h
View File

@@ -1 +1 @@
#define LIBUSB_NANO 11587
#define LIBUSB_NANO 11588