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Define USE_TLS when compiling libmysql.dll, to avoid crashing when

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loaded at runtime.


extra/comp_err.c:
  Don't use DBUG after my_end, crashes on Windows with USE_TLS.
include/my_dbug.h:
  Add missing DBUG_LEAVE in non-debug builds.
include/my_pthread.h:
  Add comment explaining USE_TLS.
libmysql/cmakelists.txt:
  Add USE_TLS to avoid crashing when loading libmysql.dll at runtime.
mysys/cmakelists.txt:
  Add USE_TLS to avoid crashing when loading libmysql.dll at runtime.
mysys/my_init.c:
  Don't use DBUG after my_thread_end(), as it crashes on Windows TLS.
This commit is contained in:
unknown 2006-03-22 09:55:26 +01:00
parent c8caeebf85
commit e29144b4b5
6 changed files with 23 additions and 7 deletions
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3
extra/comp_err.c
View file

@ -188,8 +188,9 @@ int main(int argc, char *argv[])
DBUG_RETURN(1);
}
clean_up(lang_head, error_head);
DBUG_LEAVE; /* Can't use dbug after my_end() */
my_end(info_flag ? MY_CHECK_ERROR | MY_GIVE_INFO : 0);
DBUG_RETURN(0);
return 0;
}
}

1
include/my_dbug.h
View file

@ -81,6 +81,7 @@ extern FILE *_db_fp_(void);
#else /* No debugger */
#define DBUG_ENTER(a1)
#define DBUG_LEAVE
#define DBUG_RETURN(a1) do { return(a1); } while(0)
#define DBUG_VOID_RETURN do { return; } while(0)
#define DBUG_EXECUTE(keyword,a1) do { } while(0)

7
include/my_pthread.h
View file

@ -116,6 +116,13 @@ void pthread_exit(void *a); /* was #define pthread_exit(A) ExitThread(A)*/
#define _REENTRANT 1
#define HAVE_PTHREAD_ATTR_SETSTACKSIZE 1
/*
Windows has two ways to use thread local storage. The most efficient
is using __declspec(thread), but that does not work properly when
used in a .dll that is loaded at runtime, after program load. So for
libmysql.dll and libmysqld.dll we define USE_TLS in order to use the
TlsXxx() API instead, which works in all cases.
*/
#ifdef USE_TLS /* For LIBMYSQL.DLL */
#undef SAFE_MUTEX /* This will cause conflicts */
#define pthread_key(T,V) DWORD V

6
libmysql/cmakelists.txt
View file

@ -1,5 +1,7 @@
SET(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} -DSAFEMALLOC -DSAFE_MUTEX")
SET(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} -DSAFEMALLOC -DSAFE_MUTEX")
# Need to set USE_TLS, since __declspec(thread) approach to thread local
# storage does not work properly in DLLs.
SET(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} -DSAFEMALLOC -DSAFE_MUTEX -DUSE_TLS")
SET(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} -DSAFEMALLOC -DSAFE_MUTEX -DUSE_TLS")
INCLUDE_DIRECTORIES(${CMAKE_SOURCE_DIR}/include
${CMAKE_SOURCE_DIR}/zlib

7
mysys/cmakelists.txt
View file

@ -1,5 +1,8 @@
SET(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} -DSAFEMALLOC -DSAFE_MUTEX -DUSE_SYMDIR")
SET(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} -DSAFEMALLOC -DSAFE_MUTEX -DUSE_SYMDIR")
# Need to set USE_TLS, since mysys is linked into libmysql.dll and
# libmysqld.dll, and __declspec(thread) approach to thread local storage does
# not work properly in DLLs.
SET(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} -DSAFEMALLOC -DSAFE_MUTEX -DUSE_SYMDIR -DUSE_TLS")
SET(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} -DSAFEMALLOC -DSAFE_MUTEX -DUSE_SYMDIR -DUSE_TLS")
INCLUDE_DIRECTORIES(${CMAKE_SOURCE_DIR}/zlib ${CMAKE_SOURCE_DIR}/include)
ADD_LIBRARY(mysys array.c charset-def.c charset.c checksum.c default.c default_modify.c

6
mysys/my_init.c
View file

@ -134,7 +134,10 @@ void my_end(int infoflag)
*/
FILE *info_file= DBUG_FILE;
my_bool print_info= (info_file != stderr);
DBUG_ENTER("my_end");
/* We do not use DBUG_ENTER here, as after cleanup DBUG is no longer
operational, so we cannot use DBUG_RETURN.
*/
DBUG_PRINT("info",("Shutting down"));
if (!info_file)
{
info_file= stderr;
@ -214,7 +217,6 @@ Voluntary context switches %ld, Involuntary context switches %ld\n",
WSACleanup();
#endif /* __WIN__ */
my_init_done=0;
DBUG_VOID_RETURN;
} /* my_end */