PEP 489: Multi-phase extension module initialization
Known limitations of the current implementation:
- documentation changes are incomplete
- there's a reference leak I haven't tracked down yet
The leak is most visible by running:
./python -m test -R3:3 test_importlib
However, you can also see it by running:
./python -X showrefcount
Importing the array or _testmultiphase modules, and
then deleting them from both sys.modules and the local
namespace shows significant increases in the total
number of active references each cycle. By contrast,
with _testcapi (which continues to use single-phase
initialisation) the global refcounts stabilise after
a couple of cycles.
diff --git a/Python/dynload_hpux.c b/Python/dynload_hpux.c
index c955414..e28ae7c 100644
--- a/Python/dynload_hpux.c
+++ b/Python/dynload_hpux.c
@@ -8,15 +8,16 @@
#include "importdl.h"
#if defined(__hp9000s300)
-#define FUNCNAME_PATTERN "_PyInit_%.200s"
+#define FUNCNAME_PATTERN "_%20s_%.200s"
#else
-#define FUNCNAME_PATTERN "PyInit_%.200s"
+#define FUNCNAME_PATTERN "%20s_%.200s"
#endif
const char *_PyImport_DynLoadFiletab[] = {SHLIB_EXT, NULL};
-dl_funcptr _PyImport_GetDynLoadFunc(const char *shortname,
- const char *pathname, FILE *fp)
+dl_funcptr _PyImport_FindSharedFuncptr(const char *prefix,
+ const char *shortname,
+ const char *pathname, FILE *fp)
{
dl_funcptr p;
shl_t lib;
@@ -50,7 +51,8 @@
Py_DECREF(pathname_ob);
return NULL;
}
- PyOS_snprintf(funcname, sizeof(funcname), FUNCNAME_PATTERN, shortname);
+ PyOS_snprintf(funcname, sizeof(funcname), FUNCNAME_PATTERN,
+ prefix, shortname);
if (Py_VerboseFlag)
printf("shl_findsym %s\n", funcname);
if (shl_findsym(&lib, funcname, TYPE_UNDEFINED, (void *) &p) == -1) {