我有一個應用程序,我在嵌入python。它是在Windows上開發的,它工作正常,但是現在我將它移植到linux,並且在Py_Initialize()崩潰的情況下成功率較低。從gdb,它似乎在加載os模塊時發生。在ubuntu中嵌入python時出現分段錯誤
GDB報告這個調用堆棧上賽格故障:(從2.6.5蟒下載)在Python/import.c import_submodule的
#0 0x002384fc in import_submodule (mod=None, subname=0xb7d8a9bb "os", fullname=0xb7d8a9bb "os") at ../Python/import.c:2551
#1 0x0023893c in load_next (mod=<value optimized out>, altmod=<value optimized out>, p_name=0xb7d8a9ac, buf=0xb7d8a9bb "os", p_buflen=0xb7d8a9b4) at ../Python/import.c:2411
//.... etc...:
#65 0x002439de in Py_Initialize() at ../Python/pythonrun.c:361
源代碼:
static PyObject *
import_submodule(PyObject *mod, char *subname, char *fullname)
{ //***************** THIS IS LINE 2551***************************
PyObject *modules = PyImport_GetModuleDict();
PyObject *m = NULL;
/* Require:
if mod == None: subname == fullname
else: mod.__name__ + "." + subname == fullname
*/
if ((m = PyDict_GetItemString(modules, fullname)) != NULL) {
Py_INCREF(m);
}
else {
PyObject *path, *loader = NULL;
char buf[MAXPATHLEN+1];
struct filedescr *fdp;
FILE *fp = NULL;
if (mod == Py_None)
path = NULL;
else {
path = PyObject_GetAttrString(mod, "__path__");
if (path == NULL) {
PyErr_Clear();
Py_INCREF(Py_None);
return Py_None;
}
}
buf[0] = '\0';
fdp = find_module(fullname, subname, path, buf, MAXPATHLEN+1,
&fp, &loader);
Py_XDECREF(path);
if (fdp == NULL) {
if (!PyErr_ExceptionMatches(PyExc_ImportError))
return NULL;
PyErr_Clear();
Py_INCREF(Py_None);
return Py_None;
}
m = load_module(fullname, fp, buf, fdp->type, loader);
Py_XDECREF(loader);
if (fp)
fclose(fp);
if (!add_submodule(mod, m, fullname, subname, modules)) {
Py_XDECREF(m);
m = NULL;
}
}
return m;
}
拆卸+部分源+斷點:
2550 import_submodule(PyObject *mod, char *subname, char *fullname)
2551 {
0x002384f0 <+0>: push %ebp
0x002384f1 <+1>: mov %esp,%ebp
0x002384f3 <+3>: sub $0x1058,%esp
0x002384f9 <+9>: mov %ebx,-0xc(%ebp)
=> 0x002384fc <+12>: call 0x174787 <__i686.get_pc_thunk.bx>
0x00238501 <+17>: add $0x112af3,%ebx
0x00238507 <+23>: mov %esi,-0x8(%ebp)
0x0023850a <+26>: mov 0x8(%ebp),%esi
0x0023850d <+29>: mov %edi,-0x4(%ebp)
0x00238510 <+32>: mov %eax,-0x102c(%ebp)
0x00238516 <+38>: mov %edx,-0x1030(%ebp)
0x0023851c <+44>: mov %gs:0x14,%eax
這裏發生了什麼?顯然libpython2.6.so中的一些代碼被加載並運行。
如果您可以以某種方式突出顯示2551行,這將有所幫助,因此我們知道哪條線會崩潰。 – 2010-06-22 15:58:32