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https://github.com/git/git.git
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ee4512ed48
Create a new unified tracing facility for git. The eventual intent is to replace the current trace_printf* and trace_performance* routines with a unified set of git_trace2* routines. In addition to the usual printf-style API, trace2 provides higer-level event verbs with fixed-fields allowing structured data to be written. This makes post-processing and analysis easier for external tools. Trace2 defines 3 output targets. These are set using the environment variables "GIT_TR2", "GIT_TR2_PERF", and "GIT_TR2_EVENT". These may be set to "1" or to an absolute pathname (just like the current GIT_TRACE). * GIT_TR2 is intended to be a replacement for GIT_TRACE and logs command summary data. * GIT_TR2_PERF is intended as a replacement for GIT_TRACE_PERFORMANCE. It extends the output with columns for the command process, thread, repo, absolute and relative elapsed times. It reports events for child process start/stop, thread start/stop, and per-thread function nesting. * GIT_TR2_EVENT is a new structured format. It writes event data as a series of JSON records. Calls to trace2 functions log to any of the 3 output targets enabled without the need to call different trace_printf* or trace_performance* routines. Signed-off-by: Jeff Hostetler <jeffhost@microsoft.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
31 lines
725 B
C
31 lines
725 B
C
#include "cache.h"
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#include "trace2/tr2_cmd_name.h"
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#define TR2_ENVVAR_PARENT_NAME "GIT_TR2_PARENT_NAME"
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static struct strbuf tr2cmdname_hierarchy = STRBUF_INIT;
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void tr2_cmd_name_append_hierarchy(const char *name)
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{
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const char *parent_name = getenv(TR2_ENVVAR_PARENT_NAME);
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strbuf_reset(&tr2cmdname_hierarchy);
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if (parent_name && *parent_name) {
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strbuf_addstr(&tr2cmdname_hierarchy, parent_name);
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strbuf_addch(&tr2cmdname_hierarchy, '/');
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}
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strbuf_addstr(&tr2cmdname_hierarchy, name);
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setenv(TR2_ENVVAR_PARENT_NAME, tr2cmdname_hierarchy.buf, 1);
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}
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const char *tr2_cmd_name_get_hierarchy(void)
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{
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return tr2cmdname_hierarchy.buf;
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}
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void tr2_cmd_name_release(void)
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{
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strbuf_release(&tr2cmdname_hierarchy);
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}
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