static int emit_code_object(PyCodeObject *co)
{
char buf[MAX_FUNC_NAME + 1];
char *co_name, *co_filename;
int co_firstlineno;
int sz;
#if PY_MAJOR_VERSION >= 3
co_name = PyUnicode_AsUTF8(co->co_name);
if (co_name == NULL)
return -1;
co_filename = PyUnicode_AsUTF8(co->co_filename);
if (co_filename == NULL)
return -1;
#else
co_name = PyString_AS_STRING(co->co_name);
co_filename = PyString_AS_STRING(co->co_filename);
#endif
co_firstlineno = co->co_firstlineno;
sz = snprintf(buf, MAX_FUNC_NAME / 2, "py:%s", co_name);
if (sz < 0) sz = 0;
if (sz > MAX_FUNC_NAME / 2) sz = MAX_FUNC_NAME / 2;
snprintf(buf + sz, MAX_FUNC_NAME / 2, ":%d:%s", co_firstlineno,
co_filename);
return vmprof_register_virtual_function(buf, CODE_ADDR_TO_UID(co), 500000);
}
static void* get_virtual_ip(char* sp)
{
/* This returns the address of the code object plus 0x7000000000000000
as the identifier. The mapping from identifiers to string
representations of the code object is done elsewhere, namely:
* If the code object dies while vmprof is enabled,
PyCode_Type.tp_dealloc will emit it. (We don't handle nicely
for now the case where several code objects are created and die
at the same memory address.)
* When _vmprof.disable() is called, then we look around the
process for code objects and emit all the ones that we can
find (which we hope is very close to 100% of them).
*/
PyFrameObject *f = *(PyFrameObject **)(sp + mainloop_sp_offset);
return (void *)CODE_ADDR_TO_UID(f->f_code);
}
static void* get_virtual_ip(char* sp)
{
PyFrameObject *f = *(PyFrameObject **)(sp + mainloop_sp_offset);
return (void *)CODE_ADDR_TO_UID(f->f_code);
}
