fix(profiling): avoid stack size limits on musl for stack v2 threads #12174
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## Checklist - [x] PR author has checked that all the criteria below are met - The PR description includes an overview of the change - The PR description articulates the motivation for the change - The change includes tests OR the PR description describes a testing strategy - The PR description notes risks associated with the change, if any - Newly-added code is easy to change - The change follows the [library release note guidelines](https://ddtrace.readthedocs.io/en/stable/releasenotes.html) - The change includes or references documentation updates if necessary - Backport labels are set (if [applicable](https://ddtrace.readthedocs.io/en/latest/contributing.html#backporting)) ## Reviewer Checklist - [x] Reviewer has checked that all the criteria below are met - Title is accurate - All changes are related to the pull request's stated goal - Avoids breaking [API](https://ddtrace.readthedocs.io/en/stable/versioning.html#interfaces) changes - Testing strategy adequately addresses listed risks - Newly-added code is easy to change - Release note makes sense to a user of the library - If necessary, author has acknowledged and discussed the performance implications of this PR as reported in the benchmarks PR comment - Backport labels are set in a manner that is consistent with the [release branch maintenance policy](https://ddtrace.readthedocs.io/en/latest/contributing.html#backporting) --------- Co-authored-by: Nicole Cybul <nicole.cybul@datadoghq.com>
#12075) We added locking to the memory profiler to address crashes. These locks are mostly "try" locks, meaning we bail out if we can't acquire them right away. This was done defensively to mitigate the possibility of deadlock until we fully understood why the locks are needed and could guarantee their correctness. But as a result of using try locks, the `iter_events` function in particular can fail if the memory profiler lock is contended when it tries to collect profiling events. The function then returns NULL, leading to SystemError exceptions because we don't set an error. Even if we set an error, returning NULL isn't the right thing to do. It'll basically mean we wait until the next profile iteration, still accumulating events in the same buffer, and try again to upload the events. So we're going to get multiple iteration's worth of events. The right thing to do is take the lock unconditionally in `iter_events`. We can allocate the new tracker outside the memory allocation profiler lock so that we don't need to worry about reentrancy/deadlock issues if we start profiling that allocation. Then, the only thing we do under the lock is swap out the global tracker, so it's safe to take the lock unconditionally. Fixes #11831 TODO - regression test?
…le (#12035) ## Motivation Refactors all web server integrations still using `tracer.trace` to instead use `core.context_with_data`. This is in preparation for supporting AWS API Gateway to ensure all web servers share the same code path. ## Checklist - [x] PR author has checked that all the criteria below are met - The PR description includes an overview of the change - The PR description articulates the motivation for the change - The change includes tests OR the PR description describes a testing strategy - The PR description notes risks associated with the change, if any - Newly-added code is easy to change - The change follows the [library release note guidelines](https://ddtrace.readthedocs.io/en/stable/releasenotes.html) - The change includes or references documentation updates if necessary - Backport labels are set (if [applicable](https://ddtrace.readthedocs.io/en/latest/contributing.html#backporting)) ## Reviewer Checklist - [x] Reviewer has checked that all the criteria below are met - Title is accurate - All changes are related to the pull request's stated goal - Avoids breaking [API](https://ddtrace.readthedocs.io/en/stable/versioning.html#interfaces) changes - Testing strategy adequately addresses listed risks - Newly-added code is easy to change - Release note makes sense to a user of the library - If necessary, author has acknowledged and discussed the performance implications of this PR as reported in the benchmarks PR comment - Backport labels are set in a manner that is consistent with the [release branch maintenance policy](https://ddtrace.readthedocs.io/en/latest/contributing.html#backporting)
## Checklist - [x] PR author has checked that all the criteria below are met - The PR description includes an overview of the change - The PR description articulates the motivation for the change - The change includes tests OR the PR description describes a testing strategy - The PR description notes risks associated with the change, if any - Newly-added code is easy to change - The change follows the [library release note guidelines](https://ddtrace.readthedocs.io/en/stable/releasenotes.html) - The change includes or references documentation updates if necessary - Backport labels are set (if [applicable](https://ddtrace.readthedocs.io/en/latest/contributing.html#backporting)) ## Reviewer Checklist - [x] Reviewer has checked that all the criteria below are met - Title is accurate - All changes are related to the pull request's stated goal - Avoids breaking [API](https://ddtrace.readthedocs.io/en/stable/versioning.html#interfaces) changes - Testing strategy adequately addresses listed risks - Newly-added code is easy to change - Release note makes sense to a user of the library - If necessary, author has acknowledged and discussed the performance implications of this PR as reported in the benchmarks PR comment - Backport labels are set in a manner that is consistent with the [release branch maintenance policy](https://ddtrace.readthedocs.io/en/latest/contributing.html#backporting)
Depending of the timing, libddwaf loading process could create triggers that would create loops in our instrumentation. From what I investigated: - if loaded too early, it could have bad interactions with gevent. - if loaded too late, it could be self instrumented by the tracer, creating a loop, as ctypes is using Popen and subprocess. while keeping the late loading introduced by 2 previous PRs - #11987 - #12013 this PR introduced a mechanism to bypass tracer instrumentation during ctypes loading, to avoid a possible loop that would prevent the WAF to be loaded. ## Checklist - [x] PR author has checked that all the criteria below are met - The PR description includes an overview of the change - The PR description articulates the motivation for the change - The change includes tests OR the PR description describes a testing strategy - The PR description notes risks associated with the change, if any - Newly-added code is easy to change - The change follows the [library release note guidelines](https://ddtrace.readthedocs.io/en/stable/releasenotes.html) - The change includes or references documentation updates if necessary - Backport labels are set (if [applicable](https://ddtrace.readthedocs.io/en/latest/contributing.html#backporting)) ## Reviewer Checklist - [x] Reviewer has checked that all the criteria below are met - Title is accurate - All changes are related to the pull request's stated goal - Avoids breaking [API](https://ddtrace.readthedocs.io/en/stable/versioning.html#interfaces) changes - Testing strategy adequately addresses listed risks - Newly-added code is easy to change - Release note makes sense to a user of the library - If necessary, author has acknowledged and discussed the performance implications of this PR as reported in the benchmarks PR comment - Backport labels are set in a manner that is consistent with the [release branch maintenance policy](https://ddtrace.readthedocs.io/en/latest/contributing.html#backporting)
…t config (#12089) This PR makes a change to our shared distributed tracing header injection method to dispatch signals/events instead of relying on the global config settings, which is only modifiable via env vars. This fixes distributed tracing for users that might rely solely on the `LLMObs.enable()` setup config. Programmatic `LLMObs.enable()/disable()` calls do not set the global `config._llmobs_enabled` boolean setting, which is only controlled by the `DD_LLMOBS_ENABLED` env var. This was problematic for users that relied on manual `LLMObs.enable()` setup (i.e. no env vars) because our distributed tracing injection code only checks the global config to inject llmobs parent IDs into request headers. If users manually enabled LLMObs without any env vars, then this would not be reflected in the global config value and thus LLMObs parent IDs would never be injected into the request headers. We can't check directly if LLMObs is enabled in the http injection module because: 1. This would require us to import significant product-specific LLMObs-code into the shared http injector helper module which would impact non-LLMObs users' app performance 2. Circular imports in LLMObs which imports http injector logic to use in its own helpers Instead of doing our check based on the global `config._llmobs_enabled` setting, we now send a tracing event to our shared product listeners, and register a corresponding `LLMObs._inject_llmobs_context()` hook to be called for all inject() calls if LLMObs is enabled (we check the LLMObs instance, not the global config setting value). ~One risk and why I don't like changing global config settings is because this then implies that it is no longer global or tied to an env var (I want to push for env var configuration where possible over manual overriding/enabling). If a global enabled config can be toggled indiscriminately then this could open a can of worms for enabling/disabling logic in our LLMObs service, which isn't really designed to be toggled on/off multiple times in the app's lifespan. However if some users cannot rely on env vars, then I don't see any other solution that does not couple tracer internal code with LLMObs code which is a no-option.~ (UPDATE: we avoided this issue by using signal dispatching) ## Checklist - [x] PR author has checked that all the criteria below are met - The PR description includes an overview of the change - The PR description articulates the motivation for the change - The change includes tests OR the PR description describes a testing strategy - The PR description notes risks associated with the change, if any - Newly-added code is easy to change - The change follows the [library release note guidelines](https://ddtrace.readthedocs.io/en/stable/releasenotes.html) - The change includes or references documentation updates if necessary - Backport labels are set (if [applicable](https://ddtrace.readthedocs.io/en/latest/contributing.html#backporting)) ## Reviewer Checklist - [x] Reviewer has checked that all the criteria below are met - Title is accurate - All changes are related to the pull request's stated goal - Avoids breaking [API](https://ddtrace.readthedocs.io/en/stable/versioning.html#interfaces) changes - Testing strategy adequately addresses listed risks - Newly-added code is easy to change - Release note makes sense to a user of the library - If necessary, author has acknowledged and discussed the performance implications of this PR as reported in the benchmarks PR comment - Backport labels are set in a manner that is consistent with the [release branch maintenance policy](https://ddtrace.readthedocs.io/en/latest/contributing.html#backporting)
ddtrace v3.0 is set to remove `ddtrace.providers` module from the public API. However we should still allow users to use their own ContextProviders. This PR ensures the BaseContextProvider remains in the public API and can be used in `tracer.configure(...)`. ## Checklist - [x] PR author has checked that all the criteria below are met - The PR description includes an overview of the change - The PR description articulates the motivation for the change - The change includes tests OR the PR description describes a testing strategy - The PR description notes risks associated with the change, if any - Newly-added code is easy to change - The change follows the [library release note guidelines](https://ddtrace.readthedocs.io/en/stable/releasenotes.html) - The change includes or references documentation updates if necessary - Backport labels are set (if [applicable](https://ddtrace.readthedocs.io/en/latest/contributing.html#backporting)) ## Reviewer Checklist - [x] Reviewer has checked that all the criteria below are met - Title is accurate - All changes are related to the pull request's stated goal - Avoids breaking [API](https://ddtrace.readthedocs.io/en/stable/versioning.html#interfaces) changes - Testing strategy adequately addresses listed risks - Newly-added code is easy to change - Release note makes sense to a user of the library - If necessary, author has acknowledged and discussed the performance implications of this PR as reported in the benchmarks PR comment - Backport labels are set in a manner that is consistent with the [release branch maintenance policy](https://ddtrace.readthedocs.io/en/latest/contributing.html#backporting)
Datadog ReportBranch report: ✅ 0 Failed, 130 Passed, 1468 Skipped, 4m 28.14s Total duration (35m 42.66s time saved) |
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BenchmarksBenchmark execution time: 2025-01-30 22:30:56 Comparing candidate commit bd4d0be in PR branch Found 0 performance improvements and 0 performance regressions! Performance is the same for 394 metrics, 2 unstable metrics. |
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