| // Copyright 2016 The SwiftShader Authors. All Rights Reserved. |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| // debug.h: Debugging utilities. |
| |
| #ifndef Debug_hpp |
| #define Debug_hpp |
| |
| #include <assert.h> |
| #include <stdio.h> |
| #include <stdlib.h> |
| |
| #include <cctype> |
| #include <string> |
| |
| #if !defined(TRACE_OUTPUT_FILE) |
| # define TRACE_OUTPUT_FILE "debug.txt" |
| #endif |
| |
| #if defined(__GNUC__) || defined(__clang__) |
| # define CHECK_PRINTF_ARGS __attribute__((format(printf, 1, 2))) |
| #else |
| # define CHECK_PRINTF_ARGS |
| #endif |
| |
| namespace sw { |
| |
| // Outputs text to the debugging log |
| void trace(const char *format, ...) CHECK_PRINTF_ARGS; |
| inline void trace() {} |
| |
| // Outputs text to the debugging log and prints to stderr. |
| void warn(const char *format, ...) CHECK_PRINTF_ARGS; |
| inline void warn() {} |
| |
| // Outputs the message to the debugging log and stderr, and calls abort(). |
| void abort(const char *format, ...) CHECK_PRINTF_ARGS; |
| |
| // Outputs text to the debugging log, and traps once if a debugger is attached. |
| void log_trap(const char *format, ...) CHECK_PRINTF_ARGS; |
| |
| } // namespace sw |
| |
| // A macro to output a trace of a function call and its arguments to the |
| // debugging log. Disabled if SWIFTSHADER_DISABLE_TRACE is defined. |
| #if defined(SWIFTSHADER_DISABLE_TRACE) |
| # define TRACE(message, ...) (void(0)) |
| # define TRACE_ASSERT(message, ...) (void(0)) |
| #else |
| # define TRACE(message, ...) sw::trace("%s:%d TRACE: " message "\n", __FILE__, __LINE__, ##__VA_ARGS__) |
| # define LOG_TRAP(message, ...) sw::log_trap("%s:%d %s TRACE_ASSERT: " message "\n", __FILE__, __LINE__, __func__, ##__VA_ARGS__) |
| #endif |
| |
| // A macro to print a warning message to the debugging log and stderr to denote |
| // an issue that needs fixing. |
| #define FIXME(message, ...) sw::warn("%s:%d FIXME: " message "\n", __FILE__, __LINE__, ##__VA_ARGS__) |
| |
| // A macro to print a warning message to the debugging log and stderr. |
| #define WARN(message, ...) sw::warn("%s:%d WARNING: " message "\n", __FILE__, __LINE__, ##__VA_ARGS__) |
| |
| // A macro that delegates to: |
| // abort() in debug builds (!NDEBUG || DCHECK_ALWAYS_ON) |
| // or |
| // warn() in release builds (NDEBUG && !DCHECK_ALWAYS_ON) |
| #undef DABORT |
| #if !defined(NDEBUG) || defined(DCHECK_ALWAYS_ON) |
| # define DABORT(message, ...) sw::abort("%s:%d ABORT: " message "\n", __FILE__, __LINE__, ##__VA_ARGS__) |
| #else |
| # define DABORT(message, ...) sw::warn("%s:%d WARNING: " message "\n", __FILE__, __LINE__, ##__VA_ARGS__); |
| #endif |
| |
| // A macro asserting a condition. |
| // If the condition fails, the condition and message is passed to DABORT(). |
| #undef ASSERT_MSG |
| #if !defined(NDEBUG) || defined(DCHECK_ALWAYS_ON) |
| # define ASSERT_MSG(expression, format, ...) \ |
| do \ |
| { \ |
| if(!(expression)) \ |
| { \ |
| DABORT("ASSERT(%s): " format "\n", #expression, ##__VA_ARGS__); \ |
| } \ |
| } while(0) |
| #else |
| // Silence unused variable warnings without evaluating the expressions. |
| // TODO(b/154914395): Also ignore variadic arguments (similar to RR_WATCH expansion) |
| # define ASSERT_MSG(expression, format, ...) \ |
| do \ |
| { \ |
| (void)sizeof((int)(bool)(expression)); \ |
| (void)sizeof(format); \ |
| } while(0) |
| #endif |
| |
| // A macro asserting a condition. |
| // If the condition fails, the condition is passed to DABORT(). |
| #undef ASSERT |
| #if !defined(NDEBUG) || defined(DCHECK_ALWAYS_ON) |
| # define ASSERT(expression) \ |
| do \ |
| { \ |
| if(!(expression)) \ |
| { \ |
| DABORT("ASSERT(%s)\n", #expression); \ |
| } \ |
| } while(0) |
| #else |
| // Silence unused variable warnings without evaluating the expressions. |
| # define ASSERT(expression) \ |
| do \ |
| { \ |
| (void)sizeof((int)(bool)(expression)); \ |
| } while(0) |
| #endif |
| |
| // A macro to indicate functionality currently unimplemented, for a feature advertised |
| // as supported. Since this is a bug, a bug ID must be provided, in b/### format. |
| // For unimplemented functionality not advertised as supported, use UNSUPPORTED() instead. |
| #undef UNIMPLEMENTED |
| #define UNIMPLEMENTED(format, ...) \ |
| DABORT("UNIMPLEMENTED: " format, ##__VA_ARGS__); \ |
| static_assert(format[0] == 'b' && format[1] == '/' && format[2] >= '0' && format[2] <= '9', "explanation must start with bug reference in b/### format") |
| |
| // A macro to indicate unsupported functionality. |
| // This should be called when a Vulkan / SPIR-V feature is attempted to be used, |
| // but is not currently implemented by SwiftShader. |
| // Note that in a well-behaved application these should not be reached as the |
| // application should be respecting the advertised features / limits. |
| #undef UNSUPPORTED |
| #define UNSUPPORTED(format, ...) DABORT("UNSUPPORTED: " format, ##__VA_ARGS__) |
| |
| // A macro for code which should never be reached, even with misbehaving |
| // applications. |
| #undef UNREACHABLE |
| #define UNREACHABLE(format, ...) DABORT("UNREACHABLE: " format, ##__VA_ARGS__) |
| |
| // A macro asserting a condition and returning if false. |
| // Note this macro always evaluates the expression and also returns in Release builds. |
| #undef ASSERT_OR_RETURN |
| #if !defined(NDEBUG) || defined(DCHECK_ALWAYS_ON) |
| # define ASSERT_OR_RETURN(expression) ASSERT(expression) |
| #else |
| # define ASSERT_OR_RETURN(expression) \ |
| do \ |
| { \ |
| if(!(expression)) \ |
| { \ |
| return; \ |
| } \ |
| } while(0) |
| #endif |
| |
| #endif // Debug_hpp |