bt_load_memmap()
Load a memory map associated with a backtrace
Note:
The backtrace library is an unsupported feature, due to its fragility.
For more information, see
Backtraces
in the QNX Neutrino technotes.
Synopsis:
#include <backtrace.h>
int bt_load_memmap( bt_accessor_t *acc,
bt_memmap_t * memmap );
Arguments:
- acc
- A pointer to a bt_accessor_t structure. This is an opaque structure that holds the identity of the thread to backtrace.
- memmap
- A pointer to a location where the function can store the memory map.
Library:
libbacktrace
Use the -l backtrace option to qcc to link against this library.
Description:
The bt_load_memmap() function reads the memory map information from the process represented by acc, and saves the information in memmap.
Returns:
- 0
- Success.
- -1
- An error occurred (errno is set).
Errors:
- EINVAL
- The acc or memmap argument is NULL.
- ENOMEM
- There wasn't enough memory to load the memory map.
This function can also set errno to any of the values that devctl() and open() can.
Classification:
| Safety: | |
|---|---|
| Cancellation point | No |
| Interrupt handler | No |
| Signal handler | No |
| Thread | Yes |
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