diff options
Diffstat (limited to 'pthreads/autostatic.c')
| -rw-r--r-- | pthreads/autostatic.c | 74 |
1 files changed, 58 insertions, 16 deletions
diff --git a/pthreads/autostatic.c b/pthreads/autostatic.c index 092aff2ae..3f7938881 100644 --- a/pthreads/autostatic.c +++ b/pthreads/autostatic.c @@ -8,9 +8,10 @@ * * Pthreads-win32 - POSIX Threads Library for Win32 * Copyright(C) 1998 John E. Bossom - * Copyright(C) 1999,2005 Pthreads-win32 contributors + * Copyright(C) 1999,2012 Pthreads-win32 contributors * - * Contact Email: rpj@callisto.canberra.edu.au + * Homepage1: http://sourceware.org/pthreads-win32/ + * Homepage2: http://sourceforge.net/projects/pthreads4w/ * * The current list of contributors is contained * in the file CONTRIBUTORS included with the source @@ -34,36 +35,77 @@ * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA */ -#if defined(PTW32_STATIC_LIB) - -#if defined(__MINGW64__) || defined(__MINGW32__) || defined(_MSC_VER) +#ifdef HAVE_CONFIG_H +# include <config.h> +#endif #include "pthread.h" #include "implement.h" -static void on_process_init(void) +#if defined(PTW32_STATIC_LIB) + +#if defined(PTW32_CONFIG_MINGW) || defined(_MSC_VER) + +/* For an explanation of this code (at least the MSVC parts), refer to + * + * http://www.codeguru.com/cpp/misc/misc/threadsprocesses/article.php/c6945/ + * ("Running Code Before and After Main") + * + * Compatibility with MSVC8 was cribbed from Boost: + * + * http://svn.boost.org/svn/boost/trunk/libs/thread/src/win32/tss_pe.cpp + * + * In addition to that, because we are in a static library, and the linker + * can't tell that the constructor/destructor functions are actually + * needed, we need a way to prevent the linker from optimizing away this + * module. The pthread_win32_autostatic_anchor() hack below (and in + * implement.h) does the job in a portable manner. + */ + +static int on_process_init(void) { pthread_win32_process_attach_np (); + return 0; } -static void on_process_exit(void) +static int on_process_exit(void) { pthread_win32_thread_detach_np (); pthread_win32_process_detach_np (); + return 0; } -#if defined(__MINGW64__) || defined(__MINGW32__) -# define attribute_section(a) __attribute__((section(a))) +#if defined(PTW32_CONFIG_MINGW) +__attribute__((section(".ctors"), used)) static int (*gcc_ctor)(void) = on_process_init; +__attribute__((section(".dtors"), used)) static int (*gcc_dtor)(void) = on_process_exit; #elif defined(_MSC_VER) -# define attribute_section(a) __pragma(section(a,long,read)); __declspec(allocate(a)) +# if _MSC_VER >= 1400 /* MSVC8 */ +# pragma section(".CRT$XCU", long, read) +# pragma section(".CRT$XPU", long, read) +__declspec(allocate(".CRT$XCU")) static int (*msc_ctor)(void) = on_process_init; +__declspec(allocate(".CRT$XPU")) static int (*msc_dtor)(void) = on_process_exit; +# else +# pragma data_seg(".CRT$XCU") +static int (*msc_ctor)(void) = on_process_init; +# pragma data_seg(".CRT$XPU") +static int (*msc_dtor)(void) = on_process_exit; +# pragma data_seg() /* reset data segment */ +# endif #endif -attribute_section(".ctors") void *gcc_ctor = on_process_init; -attribute_section(".dtors") void *gcc_dtor = on_process_exit; +#endif /* defined(PTW32_CONFIG_MINGW) || defined(_MSC_VER) */ -attribute_section(".CRT$XCU") void *msc_ctor = on_process_init; -attribute_section(".CRT$XPU") void *msc_dtor = on_process_exit; - -#endif /* defined(__MINGW64__) || defined(__MINGW32__) || defined(_MSC_VER) */ +/* This dummy function exists solely to be referenced by other modules + * (specifically, in implement.h), so that the linker can't optimize away + * this module. Don't call it. + */ +void ptw32_autostatic_anchor(void) { abort(); } #endif /* PTW32_STATIC_LIB */ + +#if ! defined(PTW32_BUILD_INLINED) +/* + * Avoid "translation unit is empty" warnings + */ +typedef int foo; +#endif |