* Python/import.c: support *.o/*.so as alternative for
*module.o/*module.so
* Python/import.c: if initializing a module did not enter the
module into sys.modules, it may have raised an exception -- don't
override this exception.
Merged NT changes
* Python/import.c: add lost NT-specific code back in
Fixed NT changes
This commit is contained in:
Guido van Rossum
parent
14144fcdfd
commit
74e6a118ca
406
Python/import.c
406
Python/import.c
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@ -1,5 +1,5 @@
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/***********************************************************
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Copyright 1991, 1992, 1993 by Stichting Mathematisch Centrum,
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Copyright 1991, 1992, 1993, 1994 by Stichting Mathematisch Centrum,
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Amsterdam, The Netherlands.
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All Rights Reserved
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@ -38,9 +38,9 @@ OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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#include "eval.h"
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#include "osdefs.h"
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extern int verbose; /* Defined in pythonmain.c */
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extern int verbose; /* Defined in pythonrun.c */
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extern long getmtime(); /* Defined in posixmodule.c */
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extern long getmtime(); /* In getmtime.c */
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#ifdef DEBUG
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#define D(x) x
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@ -48,20 +48,114 @@ extern long getmtime(); /* Defined in posixmodule.c */
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#define D(x)
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#endif
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#ifdef USE_DL
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#ifdef SUN_SHLIB
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#include <dlfcn.h>
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typedef void (*dl_funcptr)();
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#else
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#include "dl.h"
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#endif /* SUN_SHLIB */
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/* Explanation of some of the the various #defines used by dynamic linking...
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extern char *argv0;
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symbol -- defined for:
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DYNAMIC_LINK -- any kind of dynamic linking
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USE_RLD -- NeXT dynamic linking
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USE_DL -- Jack's dl for IRIX 4 or GNU dld with emulation for Jack's dl
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USE_SHLIB -- SunOS or IRIX 5 (SVR4?) shared libraries
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_AIX -- AIX style dynamic linking
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NT -- NT style dynamic linking (using DLLs)
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_DL_FUNCPTR_DEFINED -- if the typedef dl_funcptr has been defined
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WITH_MAC_DL -- Mac dynamic linking (highly experimental)
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SHORT_EXT -- short extension for dynamic module, e.g. ".so"
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LONG_EXT -- long extension, e.g. "module.so"
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(The other WITH_* symbols are used only once, to set the
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appropriate symbols.)
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*/
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/* Configure dynamic linking */
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#ifdef NT
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#define DYNAMIC_LINK
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#include <windows.h>
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typedef FARPROC dl_funcptr;
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#define _DL_FUNCPTR_DEFINED
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#define SHORT_EXT ".dll"
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#define LONG_EXT "module.dll"
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#endif
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#if defined(NeXT) || defined(WITH_RLD)
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#define DYNAMIC_LINK
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#define USE_RLD
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#endif
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#ifdef WITH_SGI_DL
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#define DYNAMIC_LINK
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#define USE_DL
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#endif
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#ifdef WITH_DL_DLD
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#define DYNAMIC_LINK
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#define USE_DL
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#endif
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#ifdef WITH_MAC_DL
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#define DYNAMIC_LINK
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#endif
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#if !defined(DYNAMIC_LINK) && defined(HAVE_DLFCN_H) && defined(HAVE_DLOPEN)
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#define DYNAMIC_LINK
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#define USE_SHLIB
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#endif
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#ifdef _AIX
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#define DYNAMIC_LINK
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#include <sys/ldr.h>
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typedef void (*dl_funcptr)();
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#define _DL_FUNCPTR_DEFINED
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static void aix_loaderror(char *name);
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#endif
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#ifdef DYNAMIC_LINK
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#ifdef USE_SHLIB
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#include <dlfcn.h>
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#ifndef _DL_FUNCPTR_DEFINED
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typedef void (*dl_funcptr)();
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#endif
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#ifndef RTLD_LAZY
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#define RTLD_LAZY 1
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#endif
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#define SHORT_EXT ".so"
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#define LONG_EXT "module.so"
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#endif /* USE_SHLIB */
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#ifdef USE_DL
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#include "dl.h"
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#endif
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#ifdef WITH_MAC_DL
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#include "dynamic_load.h"
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#endif
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#ifdef USE_RLD
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#include <mach-o/rld.h>
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#define FUNCNAME_PATTERN "_init%s"
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#ifndef _DL_FUNCPTR_DEFINED
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typedef void (*dl_funcptr)();
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#endif
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#endif /* USE_RLD */
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extern char *getprogramname();
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#ifndef FUNCNAME_PATTERN
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#define FUNCNAME_PATTERN "init%s"
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#endif
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#if !defined(SHORT_EXT) && !defined(LONG_EXT)
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#define SHORT_EXT ".o"
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#define LONG_EXT "module.o"
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#endif /* !SHORT_EXT && !LONG_EXT */
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#endif /* DYNAMIC_LINK */
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/* Magic word to reject .pyc files generated by other Python versions */
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#define MAGIC 0x999902L /* Increment by one for each incompatible change */
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#define MAGIC 0x999903L /* Increment by one for each incompatible change */
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static object *modules;
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@ -108,18 +202,145 @@ static struct filedescr {
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char *mode;
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enum filetype type;
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} filetab[] = {
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#ifdef USE_DL
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#ifdef SUN_SHLIB
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{"module.so", "rb", C_EXTENSION},
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#else
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{"module.o", "rb", C_EXTENSION},
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#endif /* SUN_SHLIB */
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#endif /* USE_DL */
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#ifdef DYNAMIC_LINK
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#ifdef SHORT_EXT
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{SHORT_EXT, "rb", C_EXTENSION},
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#endif /* !SHORT_EXT */
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#ifdef LONG_EXT
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{LONG_EXT, "rb", C_EXTENSION},
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#endif /* !LONG_EXT */
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#endif /* DYNAMIC_LINK */
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{".py", "r", PY_SOURCE},
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{".pyc", "rb", PY_COMPILED},
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{0, 0}
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};
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#ifdef DYNAMIC_LINK
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static object *
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load_dynamic_module(name, namebuf, m, m_ret)
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char *name;
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char *namebuf;
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object *m;
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object **m_ret;
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{
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char funcname[258];
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dl_funcptr p = NULL;
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if (m != NULL) {
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err_setstr(ImportError,
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"cannot reload dynamically loaded module");
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return NULL;
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}
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sprintf(funcname, FUNCNAME_PATTERN, name);
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#ifdef WITH_MAC_DL
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{
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object *v = dynamic_load(namebuf);
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if (v == NULL)
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return NULL;
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}
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#else /* !WITH_MAC_DL */
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#ifdef USE_SHLIB
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{
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#ifdef RTLD_NOW
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/* RTLD_NOW: resolve externals now
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(i.e. core dump now if some are missing) */
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void *handle = dlopen(namebuf, RTLD_NOW);
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#else
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void *handle;
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if (verbose)
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printf("dlopen(\"%s\", %d);\n", namebuf, RTLD_LAZY);
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handle = dlopen(namebuf, RTLD_LAZY);
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#endif /* RTLD_NOW */
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if (handle == NULL) {
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err_setstr(ImportError, dlerror());
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return NULL;
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}
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p = (dl_funcptr) dlsym(handle, funcname);
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}
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#endif /* USE_SHLIB */
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#ifdef _AIX
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p = (dl_funcptr) load(namebuf, 1, 0);
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if (p == NULL) {
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aix_loaderror(namebuf);
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return NULL;
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}
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#endif /* _AIX */
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#ifdef NT
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{
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HINSTANCE hDLL;
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hDLL = LoadLibrary(namebuf);
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if (hDLL==NULL){
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char errBuf[64];
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sprintf(errBuf, "DLL load failed with error code %d",
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GetLastError());
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err_setstr(ImportError, errBuf);
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return NULL;
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}
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p = GetProcAddress(hDLL, funcname);
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}
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#endif /* NT */
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#ifdef USE_DL
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p = dl_loadmod(getprogramname(), namebuf, funcname);
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#endif /* USE_DL */
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#ifdef USE_RLD
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{
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NXStream *errorStream;
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struct mach_header *new_header;
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const char *filenames[2];
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long ret;
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unsigned long ptr;
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errorStream = NXOpenMemory(NULL, 0, NX_WRITEONLY);
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filenames[0] = namebuf;
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filenames[1] = NULL;
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ret = rld_load(errorStream, &new_header,
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filenames, NULL);
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/* extract the error messages for the exception */
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if(!ret) {
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char *streamBuf;
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int len, maxLen;
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NXPutc(errorStream, (char)0);
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NXGetMemoryBuffer(errorStream,
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&streamBuf, &len, &maxLen);
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err_setstr(ImportError, streamBuf);
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}
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if(ret && rld_lookup(errorStream, funcname, &ptr))
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p = (dl_funcptr) ptr;
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NXCloseMemory(errorStream, NX_FREEBUFFER);
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if(!ret)
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return NULL;
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}
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#endif /* USE_RLD */
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if (p == NULL) {
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err_setstr(ImportError,
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"dynamic module does not define init function");
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return NULL;
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}
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(*p)();
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#endif /* !WITH_MAC_DL */
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*m_ret = m = dictlookup(modules, name);
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if (m == NULL) {
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if (err_occurred() == NULL)
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err_setstr(SystemError,
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"dynamic module not initialized properly");
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return NULL;
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}
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if (verbose)
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fprintf(stderr,
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"import %s # dynamically loaded from %s\n",
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name, namebuf);
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INCREF(None);
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return None;
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}
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#endif /* DYNAMIC_LINK */
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static object *
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get_module(m, name, m_ret)
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/*module*/object *m;
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@ -182,35 +403,34 @@ get_module(m, name, m_ret)
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if (magic != MAGIC) {
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if (verbose)
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fprintf(stderr,
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"# %s.pyc has bad magic\n",
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name);
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"# %s has bad magic\n",
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namebuf);
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}
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else {
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pyc_mtime = rd_long(fpc);
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if (pyc_mtime != mtime) {
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if (verbose)
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fprintf(stderr,
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"# %s.pyc has bad mtime\n",
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name);
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"# %s has bad mtime\n",
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namebuf);
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}
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else {
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fclose(fp);
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fp = fpc;
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if (verbose)
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fprintf(stderr,
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"# %s.pyc matches %s.py\n",
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name, name);
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"# %s matches %s.py\n",
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namebuf, name);
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goto use_compiled;
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}
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}
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fclose(fpc);
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}
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namebuf[len] = '\0';
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err = parse_file(fp, namebuf, file_input, &n);
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if (err != E_DONE) {
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err_input(err);
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n = parse_file(fp, namebuf, file_input);
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fclose(fp);
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if (n == NULL)
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return NULL;
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}
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co = compile(n, namebuf);
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freetree(n);
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if (co == NULL)
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@ -254,8 +474,8 @@ get_module(m, name, m_ret)
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case PY_COMPILED:
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if (verbose)
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fprintf(stderr, "# %s.pyc without %s.py\n",
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name, name);
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fprintf(stderr, "# %s without %s.py\n",
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namebuf, name);
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magic = rd_long(fp);
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if (magic != MAGIC) {
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err_setstr(ImportError,
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@ -279,44 +499,11 @@ get_module(m, name, m_ret)
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name, namebuf);
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break;
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#ifdef USE_DL
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#ifdef DYNAMIC_LINK
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case C_EXTENSION:
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{
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char funcname[258];
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dl_funcptr p;
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fclose(fp);
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sprintf(funcname, "init%s", name);
|
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#ifdef SUN_SHLIB
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{
|
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void *handle = dlopen (namebuf, 1);
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p = (dl_funcptr) dlsym(handle, funcname);
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}
|
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#else
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p = dl_loadmod(argv0, namebuf, funcname);
|
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#endif /* SUN_SHLIB */
|
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if (p == NULL) {
|
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err_setstr(ImportError,
|
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"dynamic module does not define init function");
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return NULL;
|
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} else {
|
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(*p)();
|
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*m_ret = m = dictlookup(modules, name);
|
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if (m == NULL) {
|
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err_setstr(SystemError,
|
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"dynamic module not initialized properly");
|
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return NULL;
|
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} else {
|
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if (verbose)
|
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fprintf(stderr,
|
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"import %s # dynamically loaded from %s\n",
|
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name, namebuf);
|
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INCREF(None);
|
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return None;
|
||||
}
|
||||
}
|
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break;
|
||||
}
|
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#endif /* USE_DL */
|
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return load_dynamic_module(name, namebuf, m, m_ret);
|
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#endif /* DYNAMIC_LINK */
|
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|
||||
default:
|
||||
fclose(fp);
|
||||
|
|
@ -363,9 +550,11 @@ import_module(name)
|
|||
if ((n = init_builtin(name)) || (n = init_frozen(name))) {
|
||||
if (n < 0)
|
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return NULL;
|
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if ((m = dictlookup(modules, name)) == NULL)
|
||||
err_setstr(SystemError,
|
||||
"builtin module missing");
|
||||
if ((m = dictlookup(modules, name)) == NULL) {
|
||||
if (err_occurred() == NULL)
|
||||
err_setstr(SystemError,
|
||||
"builtin module not initialized properly");
|
||||
}
|
||||
}
|
||||
else {
|
||||
m = load_module(name);
|
||||
|
|
@ -379,6 +568,7 @@ reload_module(m)
|
|||
object *m;
|
||||
{
|
||||
char *name;
|
||||
int i;
|
||||
if (m == NULL || !is_moduleobject(m)) {
|
||||
err_setstr(TypeError, "reload() argument must be module");
|
||||
return NULL;
|
||||
|
|
@ -386,7 +576,21 @@ reload_module(m)
|
|||
name = getmodulename(m);
|
||||
if (name == NULL)
|
||||
return NULL;
|
||||
/* XXX Ought to check for builtin modules -- can't reload these... */
|
||||
/* Check for built-in modules */
|
||||
for (i = 0; inittab[i].name != NULL; i++) {
|
||||
if (strcmp(name, inittab[i].name) == 0) {
|
||||
err_setstr(ImportError,
|
||||
"cannot reload built-in module");
|
||||
return NULL;
|
||||
}
|
||||
}
|
||||
/* Check for frozen modules */
|
||||
if ((i = init_frozen(name)) != 0) {
|
||||
if (i < 0)
|
||||
return NULL;
|
||||
INCREF(None);
|
||||
return None;
|
||||
}
|
||||
return get_module(m, name, (object **)NULL);
|
||||
}
|
||||
|
||||
|
|
@ -423,6 +627,11 @@ init_builtin(name)
|
|||
int i;
|
||||
for (i = 0; inittab[i].name != NULL; i++) {
|
||||
if (strcmp(name, inittab[i].name) == 0) {
|
||||
if (inittab[i].initfunc == NULL) {
|
||||
err_setstr(ImportError,
|
||||
"cannot re-init internal module");
|
||||
return -1;
|
||||
}
|
||||
if (verbose)
|
||||
fprintf(stderr, "import %s # builtin\n",
|
||||
name);
|
||||
|
|
@ -467,3 +676,58 @@ init_frozen(name)
|
|||
DECREF(v);
|
||||
return 1;
|
||||
}
|
||||
|
||||
|
||||
#ifdef _AIX
|
||||
|
||||
#include <ctype.h> /* for isdigit() */
|
||||
#include <errno.h> /* for global errno */
|
||||
#include <string.h> /* for strerror() */
|
||||
|
||||
void aix_loaderror(char *namebuf)
|
||||
{
|
||||
|
||||
char *message[8], errbuf[1024];
|
||||
int i,j;
|
||||
|
||||
struct errtab {
|
||||
int errno;
|
||||
char *errstr;
|
||||
} load_errtab[] = {
|
||||
{L_ERROR_TOOMANY, "to many errors, rest skipped."},
|
||||
{L_ERROR_NOLIB, "can't load library:"},
|
||||
{L_ERROR_UNDEF, "can't find symbol in library:"},
|
||||
{L_ERROR_RLDBAD,
|
||||
"RLD index out of range or bad relocation type:"},
|
||||
{L_ERROR_FORMAT, "not a valid, executable xcoff file:"},
|
||||
{L_ERROR_MEMBER,
|
||||
"file not an archive or does not contain requested member:"},
|
||||
{L_ERROR_TYPE, "symbol table mismatch:"},
|
||||
{L_ERROR_ALIGN, "text allignment in file is wrong."},
|
||||
{L_ERROR_SYSTEM, "System error:"},
|
||||
{L_ERROR_ERRNO, NULL}
|
||||
};
|
||||
|
||||
#define LOAD_ERRTAB_LEN (sizeof(load_errtab)/sizeof(load_errtab[0]))
|
||||
#define ERRBUF_APPEND(s) strncat(errbuf, s, sizeof(errbuf))
|
||||
|
||||
sprintf(errbuf, " from module %s ", namebuf);
|
||||
|
||||
if (!loadquery(1, &message[0], sizeof(message)))
|
||||
ERRBUF_APPEND(strerror(errno));
|
||||
for(i = 0; message[i] && *message[i]; i++) {
|
||||
int nerr = atoi(message[i]);
|
||||
for (j=0; j<LOAD_ERRTAB_LEN ; j++) {
|
||||
if (nerr == load_errtab[i].errno && load_errtab[i].errstr)
|
||||
ERRBUF_APPEND(load_errtab[i].errstr);
|
||||
}
|
||||
while (isdigit(*message[i])) message[i]++ ;
|
||||
ERRBUF_APPEND(message[i]);
|
||||
ERRBUF_APPEND("\n");
|
||||
}
|
||||
errbuf[strlen(errbuf)-1] = '\0' ; /* trim off last newline */
|
||||
err_setstr(ImportError, errbuf);
|
||||
return;
|
||||
}
|
||||
|
||||
#endif /* _AIX */
|
||||
|
|
|
|||
Loading…
Reference in New Issue