无法查看gprof分析器的完整输出
尽管使用-pg标志设置编译我的代码，但我无法查看gmon.out的gprof输出的完整细节
具体来说，我没有得到calls的详细信息， self Ts/call的calls self Ts/call和total Ts/call 。
这是gprof deepflow-static gmon.out的输出：
Flat profile:
Each sample counts as 0.01 seconds.
% cumulative self self total
time seconds seconds calls Ts/call Ts/call name
52.72 7.18 7.18 sor_coupled
34.07 11.82 4.64 compute_data_and_match
2.28 12.13 0.31 convolve_vert
2.28 12.44 0.31 compute_smoothness
2.06 12.72 0.28 convolve_horiz
1.47 12.92 0.20 color_image_resize_vert
1.03 13.06 0.14 sub_laplacian
0.88 13.18 0.12 image_resize_vert
0.88 13.30 0.12 image_warp
0.73 13.40 0.10 color_image_resize_horiz
0.59 13.48 0.08 image_resize_horiz
0.18 13.51 0.03 frexp
0.15 13.53 0.02 compute_one_level
0.15 13.55 0.02 fwrite
0.15 13.57 0.02 memcpy
0.11 13.58 0.02 __floorf_sse41
0.07 13.59 0.01 brk
0.07 13.60 0.01 color_image_png_load
0.07 13.61 0.01 get_derivatives
0.07 13.62 0.01 png_read_filter_row_paeth_multibyte_pixel
% the percentage of the total running time of the
time program used by this function.
cumulative a running sum of the number of seconds accounted
seconds for by this function and those listed above it.
self the number of seconds accounted for by this
seconds function alone. This is the major sort for this
listing.
calls the number of times this function was invoked, if
this function is profiled, else blank.
self the average number of milliseconds spent in this
ms/call function per call, if this function is profiled,
else blank.
total the average number of milliseconds spent in this
ms/call function and its descendents per call, if this
function is profiled, else blank.
name the name of the function. This is the minor sort
for this listing. The index shows the location of
the function in the gprof listing. If the index is
in parenthesis it shows where it would appear in
the gprof listing if it were to be printed.
Copyright (C) 2012 Free Software Foundation, Inc.
Copying and distribution of this file, with or without modification,
are permitted in any medium without royalty provided the copyright
notice and this notice are preserved.
这是我的Makefile：
CC=gcc
CFLAGS=-Wall -g -O3
LDFLAGS=-g -Wall -O3
LIBFLAGS=-lm -ljpeg -lpng -pg
LIBAFLAGS=-static /usr/lib/x86_64-linux-gnu/libjpeg.a /usr/local/lib/libpng16.a /usr/lib/x86_64-linux-gnu/libz.a /usr/lib/x86_64-linux-gnu/libm.a
all: deepflow-static
deepflow: deepflow.o image.o io.o opticalflow_aux.o opticalflow.o solver.o
$(CC) $(LDFLAGS) $(LIBFLAGS) -o $@ $^
deepflow-static: deepflow.o image.o io.o opticalflow_aux.o opticalflow.o solver.o
$(CC) $(LIBFLAGS) -o $@ $^ $(LIBAFLAGS)
%.o: %.c
$(CC) -o $@ $(CFLAGS) -c $+
clean:
rm -f *.o deepflow
请帮我弄清楚缺少的东西。 提前致谢
当使用gprof运行的应用程序没有成功终止时，这发生在我身上。
分析文件的生成无法完成，因为信息未完整写入gmon.out。
尝试几行后退出程序：
exit(EXIT_SUCCESS);
并检查文件是否正确生成。
您也可以通过gdb运行程序。
我不是Makefile专家，但你应该在两个步骤中使用-pg标志：
GPROF=-pg
all: $(SOURCES) $(EXECUTABLE)
$(EXECUTABLE): $(OBJECTS)
$(CC) $(LDFLAGS) $(OBJECTS) -o $@ $(LIBS) $(GPROF)
.cpp.o:
$(CC) $(CPPFLAGS) $(CFLAGS) $< -o $@ $(GPROF)