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compiler: Add OVS_CONSTRUCTOR to mark functions as init functions

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Functions marked with OVS_CONSTRUCTOR are called unconditionally
before main.

Tested with GCC. Untested with MSVC.

Signed-off-by: Helmut Schaa <helmut.schaa@googlemail.com>
Signed-off-by: Ben Pfaff <blp@nicira.com>
This commit is contained in:
Helmut Schaa
2013-12-13 14:05:00 +01:00
committed by Ben Pfaff
parent 42efb1dc45
commit 6164839f3e
1 changed files with 13 additions and 0 deletions
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13
lib/compiler.h
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@@ -179,4 +179,17 @@
#define OVS_PACKED(DECL) __pragma(pack(push, 1)) DECL __pragma(pack(pop))
#endif
#ifdef _MSC_VER
#define CCALL __cdecl
#pragma section(".CRT$XCU",read)
#define OVS_CONSTRUCTOR(f) \
static void __cdecl f(void); \
__declspec(allocate(".CRT$XCU")) void (__cdecl*f##_)(void) = f; \
static void __cdecl f(void)
#else
#define OVS_CONSTRUCTOR(f) \
static void f(void) __attribute__((constructor)); \
static void f(void)
#endif
#endif /* compiler.h */