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https://github.com/python/cpython
Revision 70b2f8797146a56a6880743424f0bedf4fc30c62 authored by Victor Stinner on 23 November 2017, 16:42:04 UTC, committed by GitHub on 23 November 2017, 16:42:04 UTC
* bpo-31324: Optimize support._match_test() (#4421) * Rename support._match_test() to support.match_test(): make it public * Remove support.match_tests global variable. It is replaced with a new support.set_match_tests() function, so match_test() doesn't have to check each time if patterns were modified. * Rewrite match_test(): use different code paths depending on the kind of patterns for best performances. Co-Authored-By: Serhiy Storchaka <storchaka@gmail.com> (cherry picked from commit 803ddd8ce22f0de3ab42fb98a225a704c000ef06) * bpo-31324: Fix test.support.set_match_tests(None) (#4505) (cherry picked from commit bb11c3c967afaf263e00844d4ab461b7fafd6d36)
1 parent 4b30429
Tip revision: 70b2f8797146a56a6880743424f0bedf4fc30c62 authored by Victor Stinner on 23 November 2017, 16:42:04 UTC
[3.6] bpo-31324: Optimize support._match_test() (#4523)
[3.6] bpo-31324: Optimize support._match_test() (#4523)
Tip revision: 70b2f87
frozen_dllmain.c
/* FreezeDLLMain.cpp
This is a DLLMain suitable for frozen applications/DLLs on
a Windows platform.
The general problem is that many Python extension modules may define
DLL main functions, but when statically linked together to form
a frozen application, this DLLMain symbol exists multiple times.
The solution is:
* Each module checks for a frozen build, and if so, defines its DLLMain
function as "__declspec(dllexport) DllMain%module%"
(eg, DllMainpythoncom, or DllMainpywintypes)
* The frozen .EXE/.DLL links against this module, which provides
the single DllMain.
* This DllMain attempts to locate and call the DllMain for each
of the extension modules.
* This code also has hooks to "simulate" DllMain when used from
a frozen .EXE.
At this stage, there is a static table of "possibly embedded modules".
This should change to something better, but it will work OK for now.
Note that this scheme does not handle dependencies in the order
of DllMain calls - except it does call pywintypes first :-)
As an example of how an extension module with a DllMain should be
changed, here is a snippet from the pythoncom extension module.
// end of example code from pythoncom's DllMain.cpp
#ifndef BUILD_FREEZE
#define DLLMAIN DllMain
#define DLLMAIN_DECL
#else
#define DLLMAIN DllMainpythoncom
#define DLLMAIN_DECL __declspec(dllexport)
#endif
extern "C" DLLMAIN_DECL
BOOL WINAPI DLLMAIN(HINSTANCE hInstance, DWORD dwReason, LPVOID lpReserved)
// end of example code from pythoncom's DllMain.cpp
***************************************************************************/
#include "windows.h"
static char *possibleModules[] = {
"pywintypes",
"pythoncom",
"win32ui",
NULL,
};
BOOL CallModuleDllMain(char *modName, DWORD dwReason);
/*
Called by a frozen .EXE only, so that built-in extension
modules are initialized correctly
*/
void PyWinFreeze_ExeInit(void)
{
char **modName;
for (modName = possibleModules;*modName;*modName++) {
/* printf("Initialising '%s'\n", *modName); */
CallModuleDllMain(*modName, DLL_PROCESS_ATTACH);
}
}
/*
Called by a frozen .EXE only, so that built-in extension
modules are cleaned up
*/
void PyWinFreeze_ExeTerm(void)
{
// Must go backwards
char **modName;
for (modName = possibleModules+Py_ARRAY_LENGTH(possibleModules)-2;
modName >= possibleModules;
*modName--) {
/* printf("Terminating '%s'\n", *modName);*/
CallModuleDllMain(*modName, DLL_PROCESS_DETACH);
}
}
BOOL WINAPI DllMain(HINSTANCE hInstance, DWORD dwReason, LPVOID lpReserved)
{
BOOL ret = TRUE;
switch (dwReason) {
case DLL_PROCESS_ATTACH:
{
char **modName;
for (modName = possibleModules;*modName;*modName++) {
BOOL ok = CallModuleDllMain(*modName, dwReason);
if (!ok)
ret = FALSE;
}
break;
}
case DLL_PROCESS_DETACH:
{
// Must go backwards
char **modName;
for (modName = possibleModules+Py_ARRAY_LENGTH(possibleModules)-2;
modName >= possibleModules;
*modName--)
CallModuleDllMain(*modName, DLL_PROCESS_DETACH);
break;
}
}
return ret;
}
BOOL CallModuleDllMain(char *modName, DWORD dwReason)
{
BOOL (WINAPI * pfndllmain)(HINSTANCE, DWORD, LPVOID);
char funcName[255];
HMODULE hmod = GetModuleHandleW(NULL);
strcpy(funcName, "_DllMain");
strcat(funcName, modName);
strcat(funcName, "@12"); // stdcall convention.
pfndllmain = (BOOL (WINAPI *)(HINSTANCE, DWORD, LPVOID))GetProcAddress(hmod, funcName);
if (pfndllmain==NULL) {
/* No function by that name exported - then that module does
not appear in our frozen program - return OK
*/
return TRUE;
}
return (*pfndllmain)(hmod, dwReason, NULL);
}
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