Moved examples to separate dir
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mollismerx
parent
4882357a2e
commit
510ba202a7
105
example.cpp
105
example.cpp
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#include <cassert>
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#include <cstring>
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#include <iostream>
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#include <time.h>
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#include <unistd.h>
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#include "elfspy/SPY.h"
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#include "elfspy/Call.h"
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#include "elfspy/Arg.h"
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#include "elfspy/Result.h"
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#include "elfspy/Fake.h"
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#include "elfspy/Profiler.h"
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//#include "elfspy/StackTrace.h"
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//#include "elfspy/StackFrame.h"
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#include "elfspy/demo.h"
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int main(int argc, char** argv)
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{
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// initialise
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spy::initialise(argc, argv);
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{
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// add some spies about things that happen in f()
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// auto f_call = spy::call(SPY(&f)); // nicer
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// auto f_call = spy::call(SPY(&f));
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auto add_spy = SPY(&add);
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auto add_arg0 = spy::arg<0>(add_spy);
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auto add_arg1 = spy::arg<1>(add_spy);
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auto add_call = spy::call(add_spy);
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auto add_result = spy::result(add_spy);
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//auto add_stack = spy::stack_trace(add_spy);
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int rv = f();
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assert(rv == 10);
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// assert(f_call->count() == 1);
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assert(add_call.count() == 2);
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assert(add_arg0.value(0) == 1);
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assert(add_arg1.value(0) == 2);
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assert(add_arg0.value(1) == 3);
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assert(add_arg1.value(1) == 4);
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assert(add_result.value(0) == 3);
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assert(add_result.value(1) == 7);
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}
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{
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auto add_spy = SPY(&add);
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auto add_patch = spy::fake(add_spy, &sub);
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int rv = f();
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assert(rv == -2);
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}
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{
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auto add_spy = SPY(&add);
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auto lambda = [](int a, int b) { return a - b; };
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auto add_patch = spy::fake(add_spy, lambda);
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int rv = f();
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assert(rv == -2);
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}
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int rv = f();
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assert(rv == 10);
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{
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time_t time_diff = 0;
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auto time_spy = SPY(&time);
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auto time_changer = [&time_diff, &time_spy](time_t* tloc) -> time_t {
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time_t fake_time = time_spy.invoke_real(tloc) + time_diff;
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if (tloc) {
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*tloc = fake_time;
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}
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return fake_time;
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};
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auto time_fake = spy::fake(time_spy, time_changer);
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// relive Y2K
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struct tm false_time;
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memset(&false_time, 0, sizeof(false_time));
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false_time.tm_sec = 58;
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false_time.tm_min = 59;
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false_time.tm_hour = 23;
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false_time.tm_mday = 31;
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false_time.tm_mon = 11;
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false_time.tm_year = 1999 - 1900;
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false_time.tm_isdst = -1;
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time_t in_the_past = mktime(&false_time);
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time_t now = time(nullptr);
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time_diff = in_the_past - now; // set the time_changer difference
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time_t reported_time = time(nullptr);
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std::cout << ctime(&reported_time) << std::endl;
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sleep(4);
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reported_time = time(nullptr);
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std::cout << ctime(&reported_time) << std::endl;
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}
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#if 0
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assert(add_stack->value().contains(SPY(&f)));
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for (spy::StackFrame frame : add_stack->value()) {
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std::cout << frame.name() << std::endl;
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}
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#endif
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{
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auto add_spy = SPY(&add);
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auto add_profiler = spy::profiler(add_spy);
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int rv = f();
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int run = 0;
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for (auto duration : add_profiler) {
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std::cout << ++run << ": " << duration << " nanoseconds" << std::endl;
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}
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}
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std::cout << "test passed" << std::endl;
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return 0;
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}
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@ -0,0 +1,30 @@
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.SECONDEXPANSION:
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LIBRARIES := demo
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BINARIES := example1 example2 example3 example5 example6 example7 example9
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demo_OBJS := \
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demo.o
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example1_LIBRARIES := demo
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example2_LIBRARIES := demo
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example3_LIBRARIES := demo
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example5_LIBRARIES := demo
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example6_LIBRARIES := demo
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example7_LIBRARIES := demo
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example9_LIBRARIES := demo
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example1_LIBS := elfspy
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example2_LIBS := elfspy
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example3_LIBS := elfspy
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example5_LIBS := elfspy
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example6_LIBS := elfspy
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example7_LIBS := elfspy
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example9_LIBS := elfspy
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INC_DIR := ../..
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LIB_DIR := . ..
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all : $(BINARIES)
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include ../makefile.inc
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@ -0,0 +1,21 @@
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CXXFLAGS := $(patsubst %,-I%,$(INC_DIR)) -std=c++14 -g -fPIC -O0
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BIND_ALL := -z now
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LD_FLAGS := # $(BIND_ALL)
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%.o : %.cpp
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g++ $(CXXFLAGS) -c $< -o $@
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LIB_TARGETS=$(patsubst %,lib%.so,$(LIBRARIES))
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$(LIB_TARGETS) : $$($$(patsubst lib%.so,%,$$@)_OBJS)
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g++ $(CXXFLAGS) -shared $^ -o $@ $(LD_FLAGS)
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readelf -Wa $@ | c++filt > $(@:%.so=%.elf)
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$(BINARIES) : $$(@).cpp $$(patsubst %,lib%.so,$$($$@_LIBRARIES))
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g++ $(CXXFLAGS) $(@).cpp -o $@ $(LD_FLAGS) $(patsubst %,-L%,$(LIB_DIR)) $(patsubst %,-l%,$($@_LIBRARIES) $($@_LIBS)) -rdynamic -ldl
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readelf -Wa $@ | c++filt > $(@).elf
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clean :
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rm -f *.o *.so $(BINARIES) *.elf
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