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Diffstat (limited to 'src/core/lib/surface/api_trace.h')
| -rw-r--r-- | src/core/lib/surface/api_trace.h | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/src/core/lib/surface/api_trace.h b/src/core/lib/surface/api_trace.h new file mode 100644 index 0000000000..b50011c9e5 --- /dev/null +++ b/src/core/lib/surface/api_trace.h @@ -0,0 +1,65 @@ +/* + * + * Copyright 2015-2016, 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. + * + */ + +#ifndef GRPC_CORE_LIB_SURFACE_API_TRACE_H +#define GRPC_CORE_LIB_SURFACE_API_TRACE_H + +#include <grpc/support/log.h> +#include "src/core/lib/debug/trace.h" + +extern int grpc_api_trace; + +/* Provide unwrapping macros because we're in C89 and variadic macros weren't + introduced until C99... */ +#define GRPC_API_TRACE_UNWRAP0() +#define GRPC_API_TRACE_UNWRAP1(a) , a +#define GRPC_API_TRACE_UNWRAP2(a, b) , a, b +#define GRPC_API_TRACE_UNWRAP3(a, b, c) , a, b, c +#define GRPC_API_TRACE_UNWRAP4(a, b, c, d) , a, b, c, d +#define GRPC_API_TRACE_UNWRAP5(a, b, c, d, e) , a, b, c, d, e +#define GRPC_API_TRACE_UNWRAP6(a, b, c, d, e, f) , a, b, c, d, e, f +#define GRPC_API_TRACE_UNWRAP7(a, b, c, d, e, f, g) , a, b, c, d, e, f, g +#define GRPC_API_TRACE_UNWRAP8(a, b, c, d, e, f, g, h) , a, b, c, d, e, f, g, h +#define GRPC_API_TRACE_UNWRAP9(a, b, c, d, e, f, g, h, i) \ + , a, b, c, d, e, f, g, h, i +#define GRPC_API_TRACE_UNWRAP10(a, b, c, d, e, f, g, h, i, j) \ + , a, b, c, d, e, f, g, h, i, j + +/* Due to the limitations of C89's preprocessor, the arity of the var-arg list + 'nargs' must be specified. */ +#define GRPC_API_TRACE(fmt, nargs, args) \ + if (grpc_api_trace) { \ + gpr_log(GPR_INFO, fmt GRPC_API_TRACE_UNWRAP##nargs args); \ + } + +#endif /* GRPC_CORE_LIB_SURFACE_API_TRACE_H */ |