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51 lines
1.6 KiB
C
51 lines
1.6 KiB
C
/** Process' CPU time utilities
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* @file*/
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#ifndef EL__UTIL_PROFILE_H
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#define EL__UTIL_PROFILE_H
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#ifdef CONFIG_DEBUG
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#include <time.h>
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/** @c CLK_DECL(n) declares an array of @a n clock_t to be used by
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* CLK_* macros. Must occur before any CLK_* macros call. */
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#define CLK_DECL(n) clock_t clk_start[n], clk_end[n], clk_diff[n]; int clk_start_line[n], clk_stop_line[n]
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/** @c CLK_START(n) starts clock @a n.
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* Must occur after CLK_DECL() and before CLK_STOP(). */
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#define CLK_START(n) do { clk_start_line[n] = __LINE__; clk_start[n] = clock(); } while (0)
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/* @c CLK_STOP(n) stops clock @a n.
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* Must occur after CLK_START() and before CLK_DUMP(). */
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#define CLK_STOP(n) do { clk_end[n] = clock(); clk_diff[n] = clk_end[n] - clk_start[n]; clk_stop_line[n] = __LINE__; } while (0)
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/* @c CLK_DUMP(n) echoes cpu time spent between CLK_START(@a n) and
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* CLK_STOP(@a n). Must occur after CLK_START() and CLK_STOP(). */
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#define CLK_DUMP(n) do { \
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fprintf(stderr, "%s:%d->%d CLK[%d]= %.16f sec.\n", \
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__FILE__, clk_start_line[n], clk_stop_line[n], \
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n, (double) clk_diff[n] / (double) CLOCKS_PER_SEC);\
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} while (0)
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/** Shortcuts for function profiling.
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* CLK_STA() must be at end of local declarations.
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* CLK_STO() must be just before end of function. */
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#define CLK_STA() CLK_DECL(1); CLK_START(0)
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#define CLK_STO() CLK_STOP(0); CLK_DUMP(0)
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#else
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/* Dummy macros. */
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#define CLK_DECL(n)
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#define CLK_START(n) do {} while (0)
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#define CLK_STOP(n) do {} while (0)
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#define CLK_DUMP(n) do {} while (0)
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#define CLK_STA()
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#define CLK_STO()
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#endif
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#endif
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