Commit Graph

63 Commits

Author SHA1 Message Date
Ken Jin b1b61dc4ce
gh-117657: Fix some simple races in instrumentation.c (GH-120118)
* stop the world when setting local events
2024-06-13 17:31:21 +08:00
scoder 70b07aa415
gh-111997: Fix argument count for LINE event and clarify type of argument counts. (#119179) 2024-05-26 12:37:33 +00:00
Irit Katriel c85e352673
gh-119431: fix refleak in test_monitoring (#119444) 2024-05-23 10:21:53 +01:00
Irit Katriel 6e9863d7a3
gh-118692: Avoid creating unnecessary StopIteration instances for monitoring (#119216) 2024-05-21 20:42:51 +00:00
Dino Viehland 00d913c671
gh-118415: Fix issues with local tracing being enabled/disabled on a function (#118496) 2024-05-06 13:06:09 -07:00
Irit Katriel 85af789961
gh-111997: C-API for signalling monitoring events (#116413) 2024-05-04 08:23:50 +00:00
Tian Gao 9c14ed0618
gh-107674: Improve performance of `sys.settrace` (GH-117133)
* Check tracing in RESUME_CHECK

* Only change to RESUME_CHECK if not tracing
2024-05-03 19:49:24 +01:00
Guido van Rossum 7d83f7bcc4
gh-118335: Configure Tier 2 interpreter at build time (#118339)
The code for Tier 2 is now only compiled when configured
with `--enable-experimental-jit[=yes|interpreter]`.

We drop support for `PYTHON_UOPS` and -`Xuops`,
but you can disable the interpreter or JIT
at runtime by setting `PYTHON_JIT=0`.
You can also build it without enabling it by default
using `--enable-experimental-jit=yes-off`;
enable with `PYTHON_JIT=1`.

On Windows, the `build.bat` script supports
`--experimental-jit`, `--experimental-jit-off`,
`--experimental-interpreter`.

In the C code, `_Py_JIT` is defined as before
when the JIT is enabled; the new variable
`_Py_TIER2` is defined when the JIT *or* the
interpreter is enabled. It is actually a bitmask:
1: JIT; 2: default-off; 4: interpreter.
2024-04-30 18:26:34 -07:00
Dino Viehland 4a1cf66c5c
gh-117657: Fix small issues with instrumentation and TSAN (#118064)
Small TSAN fixups for instrumentation
2024-04-30 11:38:05 -07:00
Tian Gao 375c94c75d
gh-107674: Lazy load line number to improve performance of tracing (GH-118127) 2024-04-29 09:54:52 +01:00
Dino Viehland 07525c9a85
gh-116818: Make `sys.settrace`, `sys.setprofile`, and monitoring thread-safe (#116775)
Makes sys.settrace, sys.setprofile, and monitoring generally thread-safe.

Mostly uses a stop-the-world approach and synchronization around the code object's _co_instrumentation_version.  There may be a little bit of extra synchronization around the monitoring data that's required to be TSAN clean.
2024-04-19 14:47:42 -07:00
Tian Gao 57183241af
gh-107674: Remove some unnecessary code in instrumentation code (GH-117393) 2024-04-09 09:54:28 +01:00
Guido van Rossum 060a96f1a9
gh-116968: Reimplement Tier 2 counters (#117144)
Introduce a unified 16-bit backoff counter type (``_Py_BackoffCounter``),
shared between the Tier 1 adaptive specializer and the Tier 2 optimizer. The
API used for adaptive specialization counters is changed but the behavior is
(supposed to be) identical.

The behavior of the Tier 2 counters is changed:
- There are no longer dynamic thresholds (we never varied these).
- All counters now use the same exponential backoff.
- The counter for ``JUMP_BACKWARD`` starts counting down from 16.
- The ``temperature`` in side exits starts counting down from 64.
2024-04-04 15:03:27 +00:00
Brett Simmers 0adfa8482d
gh-115832: Fix instrumentation version mismatch during interpreter shutdown (#115856)
A previous commit introduced a bug to `interpreter_clear()`: it set
`interp->ceval.instrumentation_version` to 0, without making the corresponding
change to `tstate->eval_breaker` (which holds a thread-local copy of the
version). After this happens, Python code can still run due to object finalizers
during a GC, and the version check in bytecodes.c will see a different result
than the one in instrumentation.c causing an infinite loop.

The fix itself is straightforward: clear `tstate->eval_breaker` when clearing
`interp->ceval.instrumentation_version`.
2024-03-04 11:29:39 -05:00
Tian Gao 7895a61168
gh-116098: Revert "gh-107674: Improve performance of `sys.settrace` (GH-114986)" (GH-116178)
Revert "gh-107674: Improve performance of `sys.settrace` (GH-114986)"

This reverts commit 0a61e23700.
2024-03-01 07:46:33 +01:00
Tian Gao 0a61e23700
gh-107674: Improve performance of `sys.settrace` (GH-114986) 2024-02-28 15:21:42 +00:00
Michael Droettboom b05afdd5ec
gh-115168: Add pystats counter for invalidated executors (GH-115169) 2024-02-26 17:51:47 +00:00
Brett Simmers 0749244d13
gh-112175: Add `eval_breaker` to `PyThreadState` (#115194)
This change adds an `eval_breaker` field to `PyThreadState`. The primary
motivation is for performance in free-threaded builds: with thread-local eval
breakers, we can stop a specific thread (e.g., for an async exception) without
interrupting other threads.

The source of truth for the global instrumentation version is stored in the
`instrumentation_version` field in PyInterpreterState. Threads usually read the
version from their local `eval_breaker`, where it continues to be colocated
with the eval breaker bits.
2024-02-20 09:57:48 -05:00
Mark Shannon 0ae60b66de
GH-113486: Do not emit spurious PY_UNWIND events for optimized calls to classes. (GH-113680) 2024-01-05 09:45:22 +00:00
Tian Gao e0afed7e27
gh-103615: Use local events for opcode tracing (GH-109472)
* Use local monitoring for opcode trace

* Remove f_opcode_trace_set

* Add test for setting f_trace_opcodes after settrace
2023-11-03 16:39:50 +00:00
Sam Gross 6dfb8fe023
gh-110481: Implement biased reference counting (gh-110764) 2023-10-30 16:06:09 +00:00
Irit Katriel 67a91f78e4
gh-109094: replace frame->prev_instr by frame->instr_ptr (#109095) 2023-10-26 13:43:10 +00:00
Mark Shannon 52e902ccf0
GH-109369: Add machinery for deoptimizing tier2 executors, both individually and globally. (GH-110384) 2023-10-23 14:49:09 +01:00
Mark Shannon bf4bc36069
GH-109369: Merge all eval-breaker flags and monitoring version into one word. (GH-109846) 2023-10-04 16:09:48 +01:00
Tian Gao d5611f2804
GH-107265: Add missing deoptimizations for ENTER_EXECUTOR's original opcode (GH-109420) 2023-09-22 14:13:31 -07:00
Tian Gao 412f5e85d6
gh-109371: Fix monitoring with instruction events set (gh-109385) 2023-09-18 23:30:08 +09:00
Brandt Bucher 22e65eecaa
GH-105848: Replace KW_NAMES + CALL with LOAD_CONST + CALL_KW (GH-109300) 2023-09-13 10:25:45 -07:00
Guido van Rossum bcce5e2718
gh-109039: Branch prediction for Tier 2 interpreter (#109038)
This adds a 16-bit inline cache entry to the conditional branch instructions POP_JUMP_IF_{FALSE,TRUE,NONE,NOT_NONE} and their instrumented variants, which is used to keep track of the branch direction.

Each time we encounter these instructions we shift the cache entry left by one and set the bottom bit to whether we jumped.

Then when it's time to translate such a branch to Tier 2 uops, we use the bit count from the cache entry to decided whether to continue translating the "didn't jump" branch or the "jumped" branch.

The counter is initialized to a pattern of alternating ones and zeros to avoid bias.

The .pyc file magic number is updated. There's a new test, some fixes for existing tests, and a few miscellaneous cleanups.
2023-09-11 18:20:24 +00:00
Mark Shannon 4a69301ea4
GH-108976. Keep monitoring data structures valid during de-optimization during callback. (GH-109131) 2023-09-11 14:37:09 +01:00
Irit Katriel 96396962ce
gh-109094: remove unnecessary updates of frame->prev_instr in instrumentation functions (#109076) 2023-09-07 18:23:11 +01:00
Dong-hee Na 3bfa24e29f
gh-107265: Remove all ENTER_EXECUTOR when execute _Py_Instrument (gh-108539) 2023-09-07 09:53:54 +09:00
Mark Shannon 5a2a046151
GH-108390: Prevent non-local events being set with `sys.monitoring.set_local_events()` (GH-108420) 2023-09-05 08:03:53 +01:00
Dong-hee Na 6cb48f0495
gh-107265: Fix initialize/remove_tools for ENTER_EXECUTOR case (gh-108482) 2023-08-27 12:31:29 +09:00
Irit Katriel 72119d16a5
gh-105481: remove regen-opcode. Generated _PyOpcode_Caches in regen-cases. (#108367) 2023-08-23 18:39:00 +01:00
Dong-hee Na 2135bcd3ca
gh-107265: Ensure de_instrument does not handle ENTER_EXECUTOR (#108366) 2023-08-23 08:45:20 -07:00
Mark Shannon 006e44f950
GH-108035: Remove the `_PyCFrame` struct as it is no longer needed for performance. (GH-108036) 2023-08-17 11:16:03 +01:00
Irit Katriel 971a4c2751
gh-103082: remove assumption that INSTRUMENTED_LINE is the last instrumented opcode (#107978) 2023-08-15 16:40:05 +01:00
Irit Katriel 608927b014
gh-103082: use IS_VALID_OPCODE instead of _PyOpcode_OpName to check if an opcode is defined (#107882) 2023-08-14 10:51:50 +01:00
Mark Shannon 37d8b904f8
GH-107674: Avoid allocating boxed ints for `sys.settrace` line events (GH-107780) 2023-08-10 13:35:02 +01:00
Mark Shannon 494e3d4436
GH-107774: Add missing audit event for PEP 669 (GH-107775) 2023-08-10 12:29:06 +01:00
Mark Shannon 52fbcf61b5
GH-107724: Fix the signature of `PY_THROW` callback functions. (GH-107725) 2023-08-09 09:30:50 +01:00
Mark Shannon c6539b36c1
GH-106895: Raise a `ValueError` when attempting to disable events that cannot be disabled. (GH-107337) 2023-07-27 15:27:11 +01:00
Mark Shannon 766d2518ae
GH-106897: Add `RERAISE` event to `sys.monitoring`. (GH-107291)
* Ensures that exception handling events are balanced. Each [re]raise event has a matching unwind/handled event.
2023-07-27 13:32:30 +01:00
Guido van Rossum 233b878288
gh-107082: Fix instruction size computation for ENTER_EXECUTOR (#107256)
Co-authored-by: Victor Stinner <vstinner@python.org>
2023-07-25 20:01:02 +00:00
Victor Stinner 0927a2b25c
GH-103082: Rename PY_MONITORING_EVENTS to _PY_MONITORING_EVENTS (#107069)
Rename private C API constants:

* Rename PY_MONITORING_UNGROUPED_EVENTS to _PY_MONITORING_UNGROUPED_EVENTS
* Rename PY_MONITORING_EVENTS to _PY_MONITORING_EVENTS
2023-07-22 21:35:27 +00:00
Victor Stinner 35963da40f
gh-106320: Create pycore_modsupport.h header file (#106355)
Remove the following functions from the C API, move them to the internal C
API: add a new pycore_modsupport.h internal header file:

* PyModule_CreateInitialized()
* _PyArg_NoKwnames()
* _Py_VaBuildStack()

No longer export these functions.
2023-07-03 09:39:11 +00:00
Victor Stinner bc7eb17084
gh-106320: Use _PyInterpreterState_GET() (#106336)
Replace PyInterpreterState_Get() with inlined
_PyInterpreterState_GET().
2023-07-02 16:37:37 +00:00
Victor Stinner 18b1fdebe0
gh-106320: Remove _PyInterpreterState_Get() alias (#106321)
Replace calls to the (removed) slow _PyInterpreterState_Get() with
fast inlined _PyInterpreterState_GET() function.
2023-07-01 23:44:07 +00:00
Mark Shannon 9339d70ac2
GH-106012: Fix monitoring of static code objects (GH-106017) 2023-06-23 13:18:29 +01:00
Mark Shannon 04492cbc9a
GH-91095: Specialize calls to normal Python classes. (GH-99331) 2023-06-22 09:48:19 +01:00