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Trent Mick <trentm@activestate.com>:

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The common technique for printing out a pointer has been to cast to a long
and use the "%lx" printf modifier. This is incorrect on Win64 where casting
to a long truncates the pointer. The "%p" formatter should be used instead.

The problem as stated by Tim:
> Unfortunately, the C committee refused to define what %p conversion "looks
> like" -- they explicitly allowed it to be implementation-defined. Older
> versions of Microsoft C even stuck a colon in the middle of the address (in
> the days of segment+offset addressing)!

The result is that the hex value of a pointer will maybe/maybe not have a 0x
prepended to it.


Notes on the patch:

There are two main classes of changes:
- in the various repr() functions that print out pointers
- debugging printf's in the various thread_*.h files (these are why the
patch is large)


Closes SourceForge patch #100505.
This commit is contained in:
Fred Drake 2000-06-30 15:01:00 +00:00
parent d49e5b4667
commit a44d353e2b
22 changed files with 153 additions and 153 deletions
Download patch file Download diff file Expand all files Collapse all files

20
Python/thread_cthread.h
View file

@ -129,13 +129,13 @@ PyThread_type_lock PyThread_allocate_lock _P0()
free((void *) lock);
lock = 0;
}
dprintf(("PyThread_allocate_lock() -> %lx\n", (long)lock));
dprintf(("PyThread_allocate_lock() -> %p\n", lock));
return (PyThread_type_lock) lock;
}
void PyThread_free_lock _P1(lock, PyThread_type_lock lock)
{
dprintf(("PyThread_free_lock(%lx) called\n", (long)lock));
dprintf(("PyThread_free_lock(%p) called\n", lock));
mutex_free(lock);
}
@ -143,20 +143,20 @@ int PyThread_acquire_lock _P2(lock, PyThread_type_lock lock, waitflag, int waitf
{
int success = FALSE;
dprintf(("PyThread_acquire_lock(%lx, %d) called\n", (long)lock, waitflag));
dprintf(("PyThread_acquire_lock(%p, %d) called\n", lock, waitflag));
if (waitflag) { /* blocking */
mutex_lock(lock);
success = TRUE;
} else { /* non blocking */
success = mutex_try_lock(lock);
}
dprintf(("PyThread_acquire_lock(%lx, %d) -> %d\n", (long)lock, waitflag, success));
dprintf(("PyThread_acquire_lock(%p, %d) -> %d\n", lock, waitflag, success));
return success;
}
void PyThread_release_lock _P1(lock, PyThread_type_lock lock)
{
dprintf(("PyThread_release_lock(%lx) called\n", (long)lock));
dprintf(("PyThread_release_lock(%p) called\n", lock));
mutex_unlock((mutex_t )lock);
}
@ -181,23 +181,23 @@ PyThread_type_sema PyThread_allocate_sema _P1(value, int value)
if (!initialized)
PyThread_init_thread();
dprintf(("PyThread_allocate_sema() -> %lx\n", (long) sema));
dprintf(("PyThread_allocate_sema() -> %p\n", sema));
return (PyThread_type_sema) sema;
}
void PyThread_free_sema _P1(sema, PyThread_type_sema sema)
{
dprintf(("PyThread_free_sema(%lx) called\n", (long) sema));
dprintf(("PyThread_free_sema(%p) called\n", sema));
}
int PyThread_down_sema _P2(sema, PyThread_type_sema sema, waitflag, int waitflag)
{
dprintf(("PyThread_down_sema(%lx, %d) called\n", (long) sema, waitflag));
dprintf(("PyThread_down_sema(%lx) return\n", (long) sema));
dprintf(("PyThread_down_sema(%p, %d) called\n", sema, waitflag));
dprintf(("PyThread_down_sema(%p) return\n", sema));
return -1;
}
void PyThread_up_sema _P1(sema, PyThread_type_sema sema)
{
dprintf(("PyThread_up_sema(%lx)\n", (long) sema));
dprintf(("PyThread_up_sema(%p)\n", sema));
}