gh-157549: Use sysconf() for the page size in remote_debug.h (GH-157800)
getpagesize() is not an ISO C or POSIX function. Darwin hides the prototype under -std=c11, so the _remote_debugging build fails with -Werror=implicit-function-declaration. That is the failure in the reported x86_64-apple-darwin → arm64-apple-darwin cross build.
Call sysconf(_SC_PAGESIZE) instead, which is already how resource.getpagesize() works. Fall back to 4096 if sysconf() fails.
--without-remote-debug is unchanged. That flag only disables the target-side attach protocol (Py_REMOTE_DEBUG); it does not exclude the _remote_debugging client module.
(cherry picked from commit 9193375382)
Co-authored-by: ノウラ | Flare <nouraellm@gmail.com>
When running profiling on Linux without sudo, attempts to read
process memory would fail with the misleading error 'Failed to find
the PyRuntime section in process <pid> on Linux platform'.
The actual issue is a permissions error because profiling was not
run with sudo. We were clearing the exception on Linux when trying
to read memory, instead, we should bubble up the permissions error
and show it properly.
(cherry picked from commit 0563890872)
Co-authored-by: ivonastojanovic <80911834+ivonastojanovic@users.noreply.github.com>
gh-142627: Ignore anonymous mappings in Linux remote debugging (GH-142628)
(cherry picked from commit e0bca091a4)
Co-authored-by: Victor Stinner <vstinner@python.org>
gh-91048: Revert the memory cache removal for remote debugging (GH-136440)
(cherry picked from commit 77d25e5b16)
gh-91048: Reintroduce the memory cache for remote debugging
Co-authored-by: Pablo Galindo Salgado <Pablogsal@gmail.com>
Fix definition of `_Py_RemoteDebug_` symbols for static linking (GH-135146)
(cherry picked from commit 2e1ad6eb26)
Co-authored-by: Zanie Blue <contact@zanie.dev>
gh-134876: Add fallback for when process_vm_readv fails with ENOSYS (GH-134878)
(cherry picked from commit ac9c3431cc)
Co-authored-by: Daniel Golding <goldingd89@gmail.com>
gh-91048: Refactor and optimize remote debugging module (#134652)
Completely refactor Modules/_remote_debugging_module.c with improved
code organization, replacing scattered reference counting and error
handling with centralized goto error paths. This cleanup improves
maintainability and reduces code duplication throughout the module while
preserving the same external API.
Implement memory page caching optimization in Python/remote_debug.h to
avoid repeated reads of the same memory regions during debugging
operations. The cache stores previously read memory pages and reuses
them for subsequent reads, significantly reducing system calls and
improving performance.
Add code object caching mechanism with a new code_object_generation
field in the interpreter state that tracks when code object caches need
invalidation. This allows efficient reuse of parsed code object metadata
and eliminates redundant processing of the same code objects across
debugging sessions.
Optimize memory operations by replacing multiple individual structure
copies with single bulk reads for the same data structures. This reduces
the number of memory operations and system calls required to gather
debugging information from the target process.
Update Makefile.pre.in to include Python/remote_debug.h in the headers
list, ensuring that changes to the remote debugging header force proper
recompilation of dependent modules and maintain build consistency across
the codebase.
Also, make the module compatible with the free threading build as an extra :)
Co-authored-by: Łukasz Langa <lukasz@langa.pl>
(cherry picked from commit 42b25ad4d3)
