perf(profiling): try to intern strings/functions

[KowalskiThomas]

Description

Testing

Risks

Additional Notes

[github-actions]

CODEOWNERS have been resolved as:

ddtrace/internal/datadog/profiling/dd_wrapper/include/ddup_interface.hpp  @DataDog/profiling-python
ddtrace/internal/datadog/profiling/dd_wrapper/include/libdatadog_helpers.hpp  @DataDog/profiling-python
ddtrace/internal/datadog/profiling/dd_wrapper/include/profile.hpp       @DataDog/profiling-python
ddtrace/internal/datadog/profiling/dd_wrapper/include/sample.hpp        @DataDog/profiling-python
ddtrace/internal/datadog/profiling/dd_wrapper/src/ddup_interface.cpp    @DataDog/profiling-python
ddtrace/internal/datadog/profiling/dd_wrapper/src/profile.cpp           @DataDog/profiling-python
ddtrace/internal/datadog/profiling/dd_wrapper/src/sample.cpp            @DataDog/profiling-python
ddtrace/internal/datadog/profiling/stack_v2/include/stack_renderer.hpp  @DataDog/profiling-python
ddtrace/internal/datadog/profiling/stack_v2/src/stack_renderer.cpp      @DataDog/profiling-python
src/native/.cargo/config.toml                                           @DataDog/apm-core-python
src/native/Cargo.lock                                                   @DataDog/apm-core-python
src/native/Cargo.toml                                                   @DataDog/apm-core-python
src/native/data_pipeline/mod.rs                                         @DataDog/apm-core-python
src/native/library_config.rs                                            @DataDog/apm-core-python

[github-actions]

Bootstrap import analysis

Comparison of import times between this PR and base.

Summary

The average import time from this PR is: 238 ± 4 ms.

The average import time from base is: 239 ± 3 ms.

The import time difference between this PR and base is: -1.7 ± 0.2 ms.

Import time breakdown

The following import paths have shrunk:

ddtrace.auto 1.955 ms (0.82%)

ddtrace.bootstrap.sitecustomize 1.282 ms (0.54%)

ddtrace.bootstrap.preload 1.282 ms (0.54%)

ddtrace.internal.remoteconfig.client 0.633 ms (0.27%)

ddtrace 0.673 ms (0.28%)

ddtrace.internal._unpatched 0.029 ms (0.01%)

json 0.029 ms (0.01%)

json.decoder 0.029 ms (0.01%)

re 0.029 ms (0.01%)

enum 0.029 ms (0.01%)

types 0.029 ms (0.01%)

[morrisonlevi]

The ddog_prof_Profile_set_profiles_dictionary function is going to reset some internal tables every time this is called. This should be moved to wherever you create a new profile.

    /// Sets the profiles dictionary to enable `api2` operations.
    pub fn set_profiles_dictionary(
        &mut self,
        profiles_dictionary: crate::profiles::collections::Arc<ProfilesDictionary>,
    ) {
        self.profiles_dictionary_translator = Some(ProfilesDictionaryTranslator {
            profiles_dictionary,
            mappings: Default::default(),
            functions: Default::default(),
            strings: Default::default(),
        });
    }