| /* |
| ****************************************************************************** |
| * * |
| * Copyright (C) 2009, International Business Machines * |
| * Corporation and others. All Rights Reserved. * |
| * * |
| ****************************************************************************** |
| * file name: ucln_imp.h |
| * encoding: US-ASCII |
| * tab size: 8 (not used) |
| * indentation:4 |
| * |
| * This file contains the platform specific implementation of per-library cleanup. |
| * |
| */ |
| |
| |
| #ifndef __UCLN_IMP_H__ |
| #define __UCLN_IMP_H__ |
| |
| #include "ucln.h" |
| #include <stdlib.h> |
| |
| /** |
| * Auto cleanup of ICU libraries |
| * There are several methods in per library cleanup of icu libraries: |
| * 1) Compiler/Platform based cleanup: |
| * a) Windows MSVC uses DllMain() |
| * b) GCC uses destructor function attribute |
| * c) Sun Studio, AIX VA, and HP-UX aCC uses a linker option to set the exit function |
| * 2) Using atexit() |
| * 3) Implementing own automatic cleanup functions |
| * |
| * For option 1, ensure that UCLN_NO_AUTO_CLEANUP is set to 0 by using --enable-auto-cleanup |
| * configure option or by setting UCLN_NO_AUTO_CLEANUP to 0 in pwin32.h (For Visual Studio |
| * solution file builds) |
| * For option 2, follow option 1 and also define UCLN_AUTO_ATEXIT |
| * For option 3, follow option 1 and also define UCLN_AUTO_LOCAL (see below for more information) |
| */ |
| |
| #if !UCLN_NO_AUTO_CLEANUP |
| |
| /* |
| * The following declarations are for when UCLN_AUTO_LOCAL or UCLN_AUTO_ATEXIT |
| * are defined. They are commented out because they are static and will be defined |
| * later. The information is still here to provide some guidance for the developer |
| * who chooses to use UCLN_AUTO_LOCAL. |
| */ |
| /** |
| * Give the library an opportunity to register an automatic cleanup. |
| * This may be called more than once. |
| */ |
| /*static void ucln_registerAutomaticCleanup();*/ |
| /** |
| * Unregister an automatic cleanup, if possible. Called from cleanup. |
| */ |
| /*static void ucln_unRegisterAutomaticCleanup();*/ |
| |
| /* ------------ automatic cleanup: registration. Choose ONE ------- */ |
| #if defined(UCLN_AUTO_LOCAL) |
| /* To use: |
| * 1. define UCLN_AUTO_LOCAL, |
| * 2. create ucln_local_hook.c containing implementations of |
| * static void ucln_registerAutomaticCleanup() |
| * static void ucln_unRegisterAutomaticCleanup() |
| */ |
| #include "ucln_local_hook.c" |
| |
| #elif defined(UCLN_AUTO_ATEXIT) |
| /* |
| * Use the ANSI C 'atexit' function. Note that this mechanism does not |
| * guarantee the order of cleanup relative to other users of ICU! |
| */ |
| static UBool gAutoCleanRegistered = FALSE; |
| |
| static void ucln_atexit_handler() |
| { |
| ucln_cleanupOne(UCLN_TYPE); |
| } |
| |
| static void ucln_registerAutomaticCleanup() |
| { |
| if(!gAutoCleanRegistered) { |
| gAutoCleanRegistered = TRUE; |
| atexit(&ucln_atexit_handler); |
| } |
| } |
| |
| static void ucln_unRegisterAutomaticCleanup () { |
| } |
| /* ------------end of automatic cleanup: registration. ------- */ |
| |
| #elif defined (UCLN_FINI) |
| /** |
| * If UCLN_FINI is defined, it is the (versioned, etc) name of a cleanup |
| * entrypoint. Add a stub to call ucln_cleanupOne |
| * Used on AIX, Solaris, and HP-UX |
| */ |
| U_CAPI void U_EXPORT2 UCLN_FINI (void); |
| |
| U_CAPI void U_EXPORT2 UCLN_FINI () |
| { |
| /* This function must be defined, if UCLN_FINI is defined, else link error. */ |
| ucln_cleanupOne(UCLN_TYPE); |
| } |
| #elif defined(__GNUC__) |
| /* GCC - use __attribute((destructor)) */ |
| static void ucln_destructor() __attribute__((destructor)) ; |
| |
| static void ucln_destructor() |
| { |
| ucln_cleanupOne(UCLN_TYPE); |
| } |
| |
| /* Windows: DllMain */ |
| #elif defined (U_WINDOWS) |
| /* |
| * ICU's own DllMain. |
| */ |
| |
| /* these are from putil.c */ |
| /* READ READ READ READ! Are you getting compilation errors from windows.h? |
| Any source file which includes this (ucln_imp.h) header MUST |
| be defined with language extensions ON. */ |
| # define WIN32_LEAN_AND_MEAN |
| # define VC_EXTRALEAN |
| # define NOUSER |
| # define NOSERVICE |
| # define NOIME |
| # define NOMCX |
| # include <windows.h> |
| /* |
| * This is a stub DllMain function with icu specific process handling code. |
| */ |
| BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved) |
| { |
| BOOL status = TRUE; |
| |
| switch(fdwReason) { |
| case DLL_PROCESS_ATTACH: |
| /* ICU does not trap process attach, but must pass these through properly. */ |
| /* ICU specific process attach could go here */ |
| break; |
| |
| case DLL_PROCESS_DETACH: |
| /* Here is the one we actually care about. */ |
| |
| ucln_cleanupOne(UCLN_TYPE); |
| |
| break; |
| |
| case DLL_THREAD_ATTACH: |
| /* ICU does not trap thread attach, but must pass these through properly. */ |
| /* ICU specific thread attach could go here */ |
| break; |
| |
| case DLL_THREAD_DETACH: |
| /* ICU does not trap thread detach, but must pass these through properly. */ |
| /* ICU specific thread detach could go here */ |
| break; |
| |
| } |
| return status; |
| } |
| #endif |
| |
| #endif /* UCLN_NO_AUTO_CLEANUP */ |
| |
| #else |
| #error This file can only be included once. |
| #endif |