forked from AFPy/python-docs-fr
324 lines
9.6 KiB
Plaintext
324 lines
9.6 KiB
Plaintext
# Copyright (C) 2001-2018, Python Software Foundation
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# For licence information, see README file.
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#
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msgid ""
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msgstr ""
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"Project-Id-Version: Python 3.6\n"
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"Report-Msgid-Bugs-To: \n"
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"POT-Creation-Date: 2018-09-15 21:52+0200\n"
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"PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
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"Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
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"Language-Team: FRENCH <traductions@lists.afpy.org>\n"
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"Language: fr\n"
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"MIME-Version: 1.0\n"
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"Content-Type: text/plain; charset=UTF-8\n"
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"Content-Transfer-Encoding: 8bit\n"
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#: ../Doc/howto/instrumentation.rst:7
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msgid "Instrumenting CPython with DTrace and SystemTap"
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msgstr ""
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#: ../Doc/howto/instrumentation.rst:0
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msgid "author"
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msgstr "auteur"
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#: ../Doc/howto/instrumentation.rst:9
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msgid "David Malcolm"
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msgstr ""
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#: ../Doc/howto/instrumentation.rst:10
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msgid "Łukasz Langa"
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msgstr ""
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#: ../Doc/howto/instrumentation.rst:12
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msgid ""
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"DTrace and SystemTap are monitoring tools, each providing a way to inspect "
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"what the processes on a computer system are doing. They both use domain-"
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"specific languages allowing a user to write scripts which:"
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msgstr ""
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#: ../Doc/howto/instrumentation.rst:16
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msgid "filter which processes are to be observed"
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msgstr ""
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#: ../Doc/howto/instrumentation.rst:17
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msgid "gather data from the processes of interest"
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msgstr ""
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#: ../Doc/howto/instrumentation.rst:18
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msgid "generate reports on the data"
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msgstr ""
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#: ../Doc/howto/instrumentation.rst:20
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msgid ""
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"As of Python 3.6, CPython can be built with embedded \"markers\", also known "
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"as \"probes\", that can be observed by a DTrace or SystemTap script, making "
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"it easier to monitor what the CPython processes on a system are doing."
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msgstr ""
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#: ../Doc/howto/instrumentation.rst:27
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msgid ""
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"DTrace markers are implementation details of the CPython interpreter. No "
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"guarantees are made about probe compatibility between versions of CPython. "
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"DTrace scripts can stop working or work incorrectly without warning when "
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"changing CPython versions."
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msgstr ""
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#: ../Doc/howto/instrumentation.rst:34
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msgid "Enabling the static markers"
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msgstr ""
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#: ../Doc/howto/instrumentation.rst:36
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msgid ""
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"macOS comes with built-in support for DTrace. On Linux, in order to build "
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"CPython with the embedded markers for SystemTap, the SystemTap development "
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"tools must be installed."
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msgstr ""
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#: ../Doc/howto/instrumentation.rst:40
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msgid "On a Linux machine, this can be done via::"
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msgstr ""
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#: ../Doc/howto/instrumentation.rst:44
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msgid "or::"
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msgstr "ou ::"
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#: ../Doc/howto/instrumentation.rst:49
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msgid "CPython must then be configured ``--with-dtrace``:"
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msgstr ""
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#: ../Doc/howto/instrumentation.rst:55
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msgid ""
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"On macOS, you can list available DTrace probes by running a Python process "
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"in the background and listing all probes made available by the Python "
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"provider::"
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msgstr ""
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#: ../Doc/howto/instrumentation.rst:72
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msgid ""
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"On Linux, you can verify if the SystemTap static markers are present in the "
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"built binary by seeing if it contains a \".note.stapsdt\" section."
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msgstr ""
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#: ../Doc/howto/instrumentation.rst:80
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msgid ""
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"If you've built Python as a shared library (with --enable-shared), you need "
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"to look instead within the shared library. For example::"
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msgstr ""
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#: ../Doc/howto/instrumentation.rst:86
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msgid "Sufficiently modern readelf can print the metadata::"
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msgstr ""
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#: ../Doc/howto/instrumentation.rst:123
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msgid ""
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"The above metadata contains information for SystemTap describing how it can "
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"patch strategically-placed machine code instructions to enable the tracing "
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"hooks used by a SystemTap script."
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msgstr ""
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#: ../Doc/howto/instrumentation.rst:129
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msgid "Static DTrace probes"
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msgstr ""
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#: ../Doc/howto/instrumentation.rst:131
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msgid ""
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"The following example DTrace script can be used to show the call/return "
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"hierarchy of a Python script, only tracing within the invocation of a "
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"function called \"start\". In other words, import-time function invocations "
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"are not going to be listed:"
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msgstr ""
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#: ../Doc/howto/instrumentation.rst:170 ../Doc/howto/instrumentation.rst:228
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msgid "It can be invoked like this::"
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msgstr ""
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#: ../Doc/howto/instrumentation.rst:174 ../Doc/howto/instrumentation.rst:234
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msgid "The output looks like this:"
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msgstr ""
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#: ../Doc/howto/instrumentation.rst:199
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msgid "Static SystemTap markers"
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msgstr ""
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#: ../Doc/howto/instrumentation.rst:201
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msgid ""
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"The low-level way to use the SystemTap integration is to use the static "
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"markers directly. This requires you to explicitly state the binary file "
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"containing them."
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msgstr ""
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#: ../Doc/howto/instrumentation.rst:205
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msgid ""
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"For example, this SystemTap script can be used to show the call/return "
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"hierarchy of a Python script:"
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msgstr ""
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#: ../Doc/howto/instrumentation.rst:245
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msgid "where the columns are:"
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msgstr ""
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#: ../Doc/howto/instrumentation.rst:247
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msgid "time in microseconds since start of script"
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msgstr ""
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#: ../Doc/howto/instrumentation.rst:249
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msgid "name of executable"
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msgstr ""
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#: ../Doc/howto/instrumentation.rst:251
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msgid "PID of process"
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msgstr ""
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#: ../Doc/howto/instrumentation.rst:253
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msgid ""
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"and the remainder indicates the call/return hierarchy as the script executes."
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msgstr ""
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#: ../Doc/howto/instrumentation.rst:255
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msgid ""
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"For a `--enable-shared` build of CPython, the markers are contained within "
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"the libpython shared library, and the probe's dotted path needs to reflect "
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"this. For example, this line from the above example:"
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msgstr ""
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#: ../Doc/howto/instrumentation.rst:263
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msgid "should instead read:"
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msgstr ""
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#: ../Doc/howto/instrumentation.rst:269
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msgid "(assuming a debug build of CPython 3.6)"
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msgstr ""
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#: ../Doc/howto/instrumentation.rst:273
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msgid "Available static markers"
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msgstr ""
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#: ../Doc/howto/instrumentation.rst:279
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msgid ""
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"This marker indicates that execution of a Python function has begun. It is "
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"only triggered for pure-Python (bytecode) functions."
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msgstr ""
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#: ../Doc/howto/instrumentation.rst:282
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msgid ""
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"The filename, function name, and line number are provided back to the "
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"tracing script as positional arguments, which must be accessed using ``"
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"$arg1``, ``$arg2``, ``$arg3``:"
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msgstr ""
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#: ../Doc/howto/instrumentation.rst:286
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msgid ""
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"``$arg1`` : ``(const char *)`` filename, accessible using "
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"``user_string($arg1)``"
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msgstr ""
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#: ../Doc/howto/instrumentation.rst:288
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msgid ""
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"``$arg2`` : ``(const char *)`` function name, accessible using "
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"``user_string($arg2)``"
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msgstr ""
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#: ../Doc/howto/instrumentation.rst:291
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msgid "``$arg3`` : ``int`` line number"
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msgstr ""
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#: ../Doc/howto/instrumentation.rst:295
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msgid ""
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"This marker is the converse of :c:func:`function__entry`, and indicates that "
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"execution of a Python function has ended (either via ``return``, or via an "
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"exception). It is only triggered for pure-Python (bytecode) functions."
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msgstr ""
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#: ../Doc/howto/instrumentation.rst:299
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msgid "The arguments are the same as for :c:func:`function__entry`"
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msgstr ""
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#: ../Doc/howto/instrumentation.rst:303
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msgid ""
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"This marker indicates a Python line is about to be executed. It is the "
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"equivalent of line-by-line tracing with a Python profiler. It is not "
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"triggered within C functions."
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msgstr ""
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#: ../Doc/howto/instrumentation.rst:307
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msgid "The arguments are the same as for :c:func:`function__entry`."
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msgstr ""
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#: ../Doc/howto/instrumentation.rst:311
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msgid ""
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"Fires when the Python interpreter starts a garbage collection cycle. "
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"``arg0`` is the generation to scan, like :func:`gc.collect()`."
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msgstr ""
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#: ../Doc/howto/instrumentation.rst:316
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msgid ""
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"Fires when the Python interpreter finishes a garbage collection cycle. "
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"``arg0`` is the number of collected objects."
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msgstr ""
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#: ../Doc/howto/instrumentation.rst:321
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msgid ""
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"Fires before :mod:`importlib` attempts to find and load the module. ``arg0`` "
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"is the module name."
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msgstr ""
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#: ../Doc/howto/instrumentation.rst:328
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msgid ""
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"Fires after :mod:`importlib`'s find_and_load function is called. ``arg0`` is "
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"the module name, ``arg1`` indicates if module was successfully loaded."
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msgstr ""
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#: ../Doc/howto/instrumentation.rst:336
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msgid "SystemTap Tapsets"
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msgstr ""
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#: ../Doc/howto/instrumentation.rst:338
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msgid ""
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"The higher-level way to use the SystemTap integration is to use a \"tapset"
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"\": SystemTap's equivalent of a library, which hides some of the lower-level "
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"details of the static markers."
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msgstr ""
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#: ../Doc/howto/instrumentation.rst:342
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msgid "Here is a tapset file, based on a non-shared build of CPython:"
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msgstr ""
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#: ../Doc/howto/instrumentation.rst:365
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msgid ""
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"If this file is installed in SystemTap's tapset directory (e.g. ``/usr/share/"
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"systemtap/tapset``), then these additional probepoints become available:"
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msgstr ""
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#: ../Doc/howto/instrumentation.rst:371
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msgid ""
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"This probe point indicates that execution of a Python function has begun. It "
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"is only triggered for pure-Python (bytecode) functions."
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msgstr ""
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#: ../Doc/howto/instrumentation.rst:376
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msgid ""
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"This probe point is the converse of :c:func:`python.function.return`, and "
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"indicates that execution of a Python function has ended (either via "
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"``return``, or via an exception). It is only triggered for pure-Python "
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"(bytecode) functions."
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msgstr ""
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#: ../Doc/howto/instrumentation.rst:383
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msgid "Examples"
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msgstr "Exemples"
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#: ../Doc/howto/instrumentation.rst:384
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msgid ""
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"This SystemTap script uses the tapset above to more cleanly implement the "
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"example given above of tracing the Python function-call hierarchy, without "
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"needing to directly name the static markers:"
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msgstr ""
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#: ../Doc/howto/instrumentation.rst:403
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msgid ""
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"The following script uses the tapset above to provide a top-like view of all "
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"running CPython code, showing the top 20 most frequently-entered bytecode "
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"frames, each second, across the whole system:"
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msgstr ""
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