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Merge pull request grpc#677 from ctiller/diagnose
Add a facility to control tracing without recompiling
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,110 @@ | ||
| /* | ||
| * | ||
| * Copyright 2015, Google Inc. | ||
| * All rights reserved. | ||
| * | ||
| * Redistribution and use in source and binary forms, with or without | ||
| * modification, are permitted provided that the following conditions are | ||
| * met: | ||
| * | ||
| * * Redistributions of source code must retain the above copyright | ||
| * notice, this list of conditions and the following disclaimer. | ||
| * * Redistributions in binary form must reproduce the above | ||
| * copyright notice, this list of conditions and the following disclaimer | ||
| * in the documentation and/or other materials provided with the | ||
| * distribution. | ||
| * * Neither the name of Google Inc. nor the names of its | ||
| * contributors may be used to endorse or promote products derived from | ||
| * this software without specific prior written permission. | ||
| * | ||
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | ||
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | ||
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | ||
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | ||
| * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | ||
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | ||
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | ||
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | ||
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | ||
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | ||
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | ||
| * | ||
| */ | ||
|
|
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| #include "src/core/debug/trace.h" | ||
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| #include <string.h> | ||
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| #include <grpc/support/alloc.h> | ||
| #include <grpc/support/log.h> | ||
| #include "src/core/support/env.h" | ||
|
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| #if GRPC_ENABLE_TRACING | ||
| gpr_uint32 grpc_trace_bits; | ||
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| static void add(const char *beg, const char *end, char ***ss, size_t *ns) { | ||
| size_t n = *ns; | ||
| size_t np = n + 1; | ||
| char *s = gpr_malloc(end - beg + 1); | ||
| memcpy(s, beg, end - beg); | ||
| s[end-beg] = 0; | ||
| *ss = gpr_realloc(*ss, sizeof(char**) * np); | ||
| (*ss)[n] = s; | ||
| *ns = np; | ||
| } | ||
|
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| static void split(const char *s, char ***ss, size_t *ns) { | ||
| const char *c = strchr(s, ','); | ||
| if (c == NULL) { | ||
| add(s, s + strlen(s), ss, ns); | ||
| } else { | ||
| add(s, c, ss, ns); | ||
| split(c+1, ss, ns); | ||
| } | ||
| } | ||
|
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| static void parse(const char *s) { | ||
| char **strings = NULL; | ||
| size_t nstrings = 0; | ||
| size_t i; | ||
| split(s, &strings, &nstrings); | ||
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| grpc_trace_bits = 0; | ||
|
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| for (i = 0; i < nstrings; i++) { | ||
| const char *s = strings[i]; | ||
| if (0 == strcmp(s, "surface")) { | ||
| grpc_trace_bits |= GRPC_TRACE_SURFACE; | ||
| } else if (0 == strcmp(s, "channel")) { | ||
| grpc_trace_bits |= GRPC_TRACE_CHANNEL; | ||
| } else if (0 == strcmp(s, "tcp")) { | ||
| grpc_trace_bits |= GRPC_TRACE_TCP; | ||
| } else if (0 == strcmp(s, "secure_endpoint")) { | ||
| grpc_trace_bits |= GRPC_TRACE_SECURE_ENDPOINT; | ||
| } else if (0 == strcmp(s, "all")) { | ||
| grpc_trace_bits = -1; | ||
| } else { | ||
| gpr_log(GPR_ERROR, "Unknown trace var: '%s'", s); | ||
| } | ||
| } | ||
|
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| for (i = 0; i < nstrings; i++) { | ||
| gpr_free(strings[i]); | ||
| } | ||
| gpr_free(strings); | ||
| } | ||
|
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| void grpc_init_trace_bits() { | ||
| char *e = gpr_getenv("GRPC_TRACE"); | ||
| if (e == NULL) { | ||
| grpc_trace_bits = 0; | ||
| } else { | ||
| parse(e); | ||
| gpr_free(e); | ||
| } | ||
| } | ||
| #else | ||
| void grpc_init_trace_bits() { | ||
| } | ||
| #endif | ||
|
|
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,60 @@ | ||
| /* | ||
| * | ||
| * Copyright 2015, Google Inc. | ||
| * All rights reserved. | ||
| * | ||
| * Redistribution and use in source and binary forms, with or without | ||
| * modification, are permitted provided that the following conditions are | ||
| * met: | ||
| * | ||
| * * Redistributions of source code must retain the above copyright | ||
| * notice, this list of conditions and the following disclaimer. | ||
| * * Redistributions in binary form must reproduce the above | ||
| * copyright notice, this list of conditions and the following disclaimer | ||
| * in the documentation and/or other materials provided with the | ||
| * distribution. | ||
| * * Neither the name of Google Inc. nor the names of its | ||
| * contributors may be used to endorse or promote products derived from | ||
| * this software without specific prior written permission. | ||
| * | ||
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | ||
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | ||
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | ||
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | ||
| * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | ||
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | ||
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | ||
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | ||
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | ||
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | ||
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | ||
| * | ||
| */ | ||
|
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| #ifndef GRPC_CORE_DEBUG_TRACE_H | ||
| #define GRPC_CORE_DEBUG_TRACE_H | ||
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| #include <grpc/support/port_platform.h> | ||
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| /* set to zero to remove all debug trace code */ | ||
| #ifndef GRPC_ENABLE_TRACING | ||
| # define GRPC_ENABLE_TRACING 1 | ||
| #endif | ||
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| typedef enum { | ||
| GRPC_TRACE_SURFACE = 1 << 0, | ||
| GRPC_TRACE_CHANNEL = 1 << 1, | ||
| GRPC_TRACE_TCP = 1 << 2, | ||
| GRPC_TRACE_SECURE_ENDPOINT = 1 << 3 | ||
| } grpc_trace_bit_value; | ||
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| #if GRPC_ENABLE_TRACING | ||
| extern gpr_uint32 grpc_trace_bits; | ||
| #else | ||
| # define grpc_trace_bits 0 | ||
| #endif | ||
|
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| void grpc_init_trace_bits(); | ||
|
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| #endif | ||
|
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