boost/context
2
0
Fork 0
mirror of https://github.com/boostorg/context.git synced 2026-01-19 04:02:17 +00:00
Code Issues Projects Releases Wiki Activity
Files
4b8a730919c160fece5b561d3d22a7169dcdd8c4
context/test/test_callcc.cpp
Oliver Kowalke 4b8a730919 support ucontext_t in callcc()
2017-06-01 18:20:02 +02:00

656 lines
17 KiB
C++
Raw Blame History

// Copyright Oliver Kowalke 2009.
// Distributed under the Boost Software License, Version 1.0.
// (See accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
#include <stdio.h>
#include <stdlib.h>
#include <cmath>
#include <cstdint>
#include <cstdio>
#include <iostream>
#include <memory>
#include <sstream>
#include <stdexcept>
#include <string>
#include <thread>
#include <utility>
#include <vector>
#include <boost/array.hpp>
#include <boost/assert.hpp>
#include <boost/lexical_cast.hpp>
#include <boost/test/unit_test.hpp>
#include <boost/utility.hpp>
#include <boost/variant.hpp>
#include <boost/context/continuation.hpp>
#include <boost/context/detail/config.hpp>
#ifdef BOOST_WINDOWS
#include <windows.h>
#endif
#if defined(BOOST_MSVC)
# pragma warning(push)
# pragma warning(disable: 4723)
#endif
typedef boost::variant<int,std::string> variant_t;
namespace ctx = boost::context;
int value1 = 0;
std::string value2;
double value3 = 0.;
struct X {
ctx::continuation foo( ctx::continuation && c) {
value1 = c.get_data< int >();
return std::move( c);
}
};
struct Y {
Y() {
value1 = 3;
}
Y( Y const&) = delete;
Y & operator=( Y const&) = delete;
~Y() {
value1 = 7;
}
};
class moveable {
public:
bool state;
int value;
moveable() :
state( false),
value( -1) {
}
moveable( int v) :
state( true),
value( v) {
}
moveable( moveable && other) :
state( other.state),
value( other.value) {
other.state = false;
other.value = -1;
}
moveable & operator=( moveable && other) {
if ( this == & other) return * this;
state = other.state;
value = other.value;
other.state = false;
other.value = -1;
return * this;
}
moveable( moveable const& other) = delete;
moveable & operator=( moveable const& other) = delete;
void operator()() {
value1 = value;
}
};
struct my_exception : public std::runtime_error {
ctx::continuation c;
my_exception( ctx::continuation && c_, char const* what) :
std::runtime_error( what),
c{ std::move( c_) } {
}
};
#ifdef BOOST_MSVC
// Optimizations can remove the integer-divide-by-zero here.
#pragma optimize("", off)
void seh( bool & catched) {
__try {
int i = 1;
i /= 0;
} __except( EXCEPTION_EXECUTE_HANDLER) {
catched = true;
}
}
#pragma optimize("", on)
#endif
ctx::continuation fn1( ctx::continuation && c) {
value1 = c.get_data< int >();
return std::move( c);
}
ctx::continuation fn2( ctx::continuation && c) {
try {
throw std::runtime_error( c.get_data< const char * >() );
} catch ( std::runtime_error const& e) {
value2 = e.what();
}
return std::move( c);
}
ctx::continuation fn3( ctx::continuation && c) {
double d = c.get_data< double >();
d += 3.45;
value3 = d;
return std::move( c);
}
ctx::continuation fn5( ctx::continuation && c) {
value1 = 3;
return std::move( c);
}
ctx::continuation fn4( ctx::continuation && c) {
ctx::continuation c1 = ctx::callcc( fn5);
value3 = 3.14;
return std::move( c);
}
ctx::continuation fn6( ctx::continuation && c) {
try {
value1 = 3;
c = c.resume();
value1 = 7;
c = c.resume();
} catch ( my_exception & e) {
value2 = e.what();
}
return std::move( c);
}
ctx::continuation fn7( ctx::continuation && c) {
Y y;
return c.resume();
}
ctx::continuation fn8( ctx::continuation && c) {
value1 = c.get_data< int >();
return std::move( c);
}
ctx::continuation fn9( ctx::continuation && c) {
value1 = c.get_data< int >();
c = c.resume( value1);
value1 = c.get_data< int >();
return std::move( c);
}
ctx::continuation fn10( ctx::continuation && c) {
int & i = c.get_data< int & >();
return c.resume( std::ref( i) );
}
ctx::continuation fn11( ctx::continuation && c) {
moveable m = c.get_data< moveable >();
c = c.resume( std::move( m) );
m = c.get_data< moveable >();
return c.resume( std::move( m) );
}
ctx::continuation fn12( ctx::continuation && c) {
int i; std::string str;
std::tie( i, str) = c.get_data< int, std::string >();
return c.resume( i, str);
}
ctx::continuation fn13( ctx::continuation && c) {
int i; moveable m;
std::tie( i, m) = c.get_data< int, moveable >();
return c.resume( i, std::move( m) );
}
ctx::continuation fn14( ctx::continuation && c) {
variant_t data = c.get_data< variant_t >();
int i = boost::get< int >( data);
data = boost::lexical_cast< std::string >( i);
return c.resume( data);
}
ctx::continuation fn15( ctx::continuation && c) {
Y * py = c.get_data< Y * >();
return c.resume( py);
}
ctx::continuation fn16( ctx::continuation && c) {
int i = c.get_data< int >();
value1 = i;
c = c.resume( i);
value1 = c.get_data< int >();
return std::move( c);
}
ctx::continuation fn17( ctx::continuation && c) {
int i; int j;
std::tie( i, j) = c.get_data< int, int >();
for (;;) {
c = c.resume( i, j);
std::tie( i, j) = c.get_data< int, int >();
}
return std::move( c);
}
void test_move() {
value1 = 0;
ctx::continuation c;
BOOST_CHECK( ! c );
ctx::continuation c1 = ctx::callcc( fn9, 1);
ctx::continuation c2 = ctx::callcc( fn9, 3);
BOOST_CHECK( c1 );
BOOST_CHECK( c2 );
c1 = std::move( c2);
BOOST_CHECK( c1 );
BOOST_CHECK( ! c2 );
BOOST_CHECK_EQUAL( 3, value1);
c1.resume( 0);
BOOST_CHECK_EQUAL( 0, value1);
BOOST_CHECK( ! c1 );
BOOST_CHECK( ! c2 );
}
void test_bind() {
value1 = 0;
X x;
ctx::continuation c = ctx::callcc( std::bind( & X::foo, x, std::placeholders::_1), 7);
BOOST_CHECK_EQUAL( 7, value1);
}
void test_exception() {
{
const char * what = "hello world";
ctx::continuation c = ctx::callcc( fn2, what);
BOOST_CHECK_EQUAL( std::string( what), value2);
BOOST_CHECK( ! c );
}
#ifdef BOOST_MSVC
{
bool catched = false;
std::thread([&catched](){
ctx::continuation c = ctx::callcc([&catched](ctx::continuation && c){
c = c.resume();
seh( catched);
return std::move( c);
});
BOOST_CHECK( c );
c.resume();
}).join();
BOOST_CHECK( catched);
}
#endif
}
void test_fp() {
double d = 7.13;
ctx::continuation c = ctx::callcc( fn3, d);
BOOST_CHECK_EQUAL( 10.58, value3);
BOOST_CHECK( ! c );
}
void test_stacked() {
value1 = 0;
value3 = 0.;
ctx::continuation c = ctx::callcc( fn4);
BOOST_CHECK_EQUAL( 3, value1);
BOOST_CHECK_EQUAL( 3.14, value3);
BOOST_CHECK( ! c );
}
void test_prealloc() {
value1 = 0;
ctx::default_stack alloc;
ctx::stack_context sctx( alloc.allocate() );
void * sp = static_cast< char * >( sctx.sp) - 10;
std::size_t size = sctx.size - 10;
ctx::continuation c = ctx::callcc( std::allocator_arg, ctx::preallocated( sp, size, sctx), alloc, fn1, 7);
BOOST_CHECK_EQUAL( 7, value1);
BOOST_CHECK( ! c );
}
void test_ontop() {
{
int i = 3, j = 0;
ctx::continuation c = ctx::callcc([](ctx::continuation && c) {
int x = c.get_data< int >();
for (;;) {
c = c.resume( x*10);
if ( c.data_available() ) {
x = c.get_data< int >();
}
}
return std::move( c);
}, i);
c = c.resume_with(
[](ctx::continuation && c){
int x = c.get_data< int >();
return x-10;
},
i);
if ( c.data_available() ) {
j = c.get_data< int >();
}
BOOST_CHECK( c );
BOOST_CHECK_EQUAL( j, -70);
}
{
int i = 3, j = 1;
ctx::continuation c;
c = ctx::callcc( fn17, i, j);
c = c.resume_with(
[](ctx::continuation && c){
int x, y;
std::tie( x, y) = c.get_data< int, int >();
return std::make_tuple( x - y, x + y);
},
i, j);
std::tie( i, j) = c.get_data< int, int >();
BOOST_CHECK_EQUAL( i, 2);
BOOST_CHECK_EQUAL( j, 4);
}
{
moveable m1( 7), m2, dummy;
ctx::continuation c = ctx::callcc( fn11, std::move( dummy) );
BOOST_CHECK( 7 == m1.value);
BOOST_CHECK( m1.state);
BOOST_CHECK( -1 == m2.value);
BOOST_CHECK( ! m2.state);
c = c.resume_with(
[](ctx::continuation && c){
moveable m = c.get_data< moveable >();
BOOST_CHECK( m.state);
BOOST_CHECK( 7 == m.value);
return m;
},
std::move( m1) );
m2 = c.get_data< moveable >();
BOOST_CHECK( ! m1.state);
BOOST_CHECK( -1 == m1.value);
BOOST_CHECK( m2.state);
BOOST_CHECK( 7 == m2.value);
}
}
void test_ontop_exception() {
{
value1 = 0;
value2 = "";
ctx::continuation c = ctx::callcc([](ctx::continuation && c){
for (;;) {
value1 = 3;
try {
c = c.resume();
} catch ( my_exception & ex) {
value2 = ex.what();
return std::move( ex.c);
}
}
return std::move( c);
});
c = c.resume();
BOOST_CHECK_EQUAL( 3, value1);
const char * what = "hello world";
c.resume_with(
[what](ctx::continuation && c){
throw my_exception( std::move( c), what);
});
BOOST_CHECK_EQUAL( 3, value1);
BOOST_CHECK_EQUAL( std::string( what), value2);
}
{
value2 = "";
int i = 3, j = 1;
ctx::continuation c = ctx::callcc([]( ctx::continuation && c) {
int x; int y;
std::tie( x, y) = c.get_data< int, int >();
for (;;) {
try {
c = c.resume( x+y,x-y);
std::tie( x, y) = c.get_data< int, int >();
} catch ( my_exception & ex) {
value2 = ex.what();
return std::move( ex.c);
}
}
return std::move( c);
},
i, j);
BOOST_CHECK( c );
std::tie( i, j) = c.get_data< int, int >();
BOOST_CHECK_EQUAL( i, 4);
BOOST_CHECK_EQUAL( j, 2);
char const * what = "hello world";
c = c.resume_with(
[](ctx::continuation && c) {
char const * what = c.get_data< char const * >();
throw my_exception( std::move( c), what);
return what;
},
what);
BOOST_CHECK( ! c );
BOOST_CHECK_EQUAL( i, 4);
BOOST_CHECK_EQUAL( j, 2);
BOOST_CHECK_EQUAL( std::string( what), value2);
}
}
void test_termination() {
{
value1 = 0;
ctx::continuation c = ctx::callcc( fn7);
BOOST_CHECK_EQUAL( 3, value1);
}
BOOST_CHECK_EQUAL( 7, value1);
{
value1 = 0;
BOOST_CHECK_EQUAL( 0, value1);
ctx::continuation c = ctx::callcc( fn5);
BOOST_CHECK_EQUAL( 3, value1);
BOOST_CHECK( ! c );
}
{
value1 = 0;
BOOST_CHECK_EQUAL( 0, value1);
int i = 3;
ctx::continuation c;
BOOST_CHECK( ! c );
c = ctx::callcc( fn9, i);
BOOST_CHECK( c );
i = c.get_data< int >();
BOOST_CHECK_EQUAL( i, value1);
BOOST_CHECK( c );
i = 7;
c = c.resume( i);
BOOST_CHECK( ! c );
BOOST_CHECK_EQUAL( i, value1);
}
}
void test_one_arg() {
{
value1 = 0;
ctx::continuation c;
c = ctx::callcc( fn8, 7);
BOOST_CHECK_EQUAL( 7, value1);
}
{
int i = 3, j = 0;
ctx::continuation c;
c = ctx::callcc( fn9, i);
j = c.get_data< int >();
BOOST_CHECK_EQUAL( i, j);
}
{
int i_ = 3;
int & i = i_;
BOOST_CHECK_EQUAL( i, i_);
ctx::continuation c = ctx::callcc( fn10, std::ref( i) );
BOOST_CHECK( c.data_available() );
int & j = c.get_data< int & >();
BOOST_CHECK_EQUAL( i, i_);
BOOST_CHECK_EQUAL( j, i_);
BOOST_CHECK( & i == & j);
}
{
Y y;
Y * py = nullptr;
ctx::continuation c;
c = ctx::callcc( fn15, & y);
py = c.get_data< Y * >();
BOOST_CHECK( py == & y);
}
{
moveable m1( 7), m2;
BOOST_CHECK( 7 == m1.value);
BOOST_CHECK( m1.state);
BOOST_CHECK( -1 == m2.value);
BOOST_CHECK( ! m2.state);
ctx::continuation c;
c = ctx::callcc( fn11, std::move( m1) );
m2 = c.get_data< moveable >();
BOOST_CHECK( -1 == m1.value);
BOOST_CHECK( ! m1.state);
BOOST_CHECK( 7 == m2.value);
BOOST_CHECK( m2.state);
}
}
void test_two_args() {
{
int i1 = 3, i2 = 0;
std::string str1("abc"), str2;
ctx::continuation c = ctx::callcc( fn12, i1, str1);
std::tie( i2, str2) = c.get_data< int, std::string >();
BOOST_CHECK_EQUAL( i1, i2);
BOOST_CHECK_EQUAL( str1, str2);
}
{
int i1 = 3, i2 = 0;
moveable m1( 7), m2;
BOOST_CHECK( 7 == m1.value);
BOOST_CHECK( m1.state);
BOOST_CHECK( -1 == m2.value);
BOOST_CHECK( ! m2.state);
ctx::continuation c;
c = ctx::callcc( fn13, i1, std::move( m1) );
std::tie( i2, m2) = c.get_data< int, moveable >();
BOOST_CHECK_EQUAL( i1, i2);
BOOST_CHECK( -1 == m1.value);
BOOST_CHECK( ! m1.state);
BOOST_CHECK( 7 == m2.value);
BOOST_CHECK( m2.state);
}
}
void test_variant() {
{
int i = 7;
variant_t data1 = i, data2;
ctx::continuation c;
c = ctx::callcc( fn14, data1);
data2 = c.get_data< variant_t >();
std::string str = boost::get< std::string >( data2);
BOOST_CHECK_EQUAL( std::string("7"), str);
}
}
void test_sscanf() {
ctx::continuation c = ctx::callcc(
[]( ctx::continuation && c) {
{
double n1 = 0;
double n2 = 0;
sscanf("3.14 7.13", "%lf %lf", & n1, & n2);
BOOST_CHECK( n1 == 3.14);
BOOST_CHECK( n2 == 7.13);
}
{
int n1=0;
int n2=0;
sscanf("1 23", "%d %d", & n1, & n2);
BOOST_CHECK( n1 == 1);
BOOST_CHECK( n2 == 23);
}
{
int n1=0;
int n2=0;
sscanf("1 jjj 23", "%d %*[j] %d", & n1, & n2);
BOOST_CHECK( n1 == 1);
BOOST_CHECK( n2 == 23);
}
return std::move( c);
});
}
void test_snprintf() {
ctx::continuation c = ctx::callcc(
[]( ctx::continuation && c) {
{
const char *fmt = "sqrt(2) = %f";
char buf[15];
snprintf( buf, sizeof( buf), fmt, std::sqrt( 2) );
BOOST_CHECK( 0 < sizeof( buf) );
BOOST_ASSERT( std::string("sqrt(2) = 1.41") == std::string( buf, 14) );
}
{
std::uint64_t n = 0xbcdef1234567890;
const char *fmt = "0x%016llX";
char buf[100];
snprintf( buf, sizeof( buf), fmt, n);
BOOST_ASSERT( std::string("0x0BCDEF1234567890") == std::string( buf, 18) );
}
return std::move( c);
});
}
#ifdef BOOST_WINDOWS
void test_bug12215() {
ctx::continuation c = ctx::callcc(
[](ctx::continuation && c) {
char buffer[MAX_PATH];
GetModuleFileName( nullptr, buffer, MAX_PATH);
return std::move( c);
});
}
#endif
boost::unit_test::test_suite * init_unit_test_suite( int, char* [])
{
boost::unit_test::test_suite * test =
BOOST_TEST_SUITE("Boost.Context: callcc test suite");
test->add( BOOST_TEST_CASE( & test_move) );
test->add( BOOST_TEST_CASE( & test_bind) );
test->add( BOOST_TEST_CASE( & test_exception) );
test->add( BOOST_TEST_CASE( & test_fp) );
test->add( BOOST_TEST_CASE( & test_stacked) );
test->add( BOOST_TEST_CASE( & test_prealloc) );
test->add( BOOST_TEST_CASE( & test_ontop) );
test->add( BOOST_TEST_CASE( & test_ontop_exception) );
test->add( BOOST_TEST_CASE( & test_termination) );
test->add( BOOST_TEST_CASE( & test_one_arg) );
test->add( BOOST_TEST_CASE( & test_two_args) );
test->add( BOOST_TEST_CASE( & test_variant) );
test->add( BOOST_TEST_CASE( & test_sscanf) );
test->add( BOOST_TEST_CASE( & test_snprintf) );
#ifdef BOOST_WINDOWS
test->add( BOOST_TEST_CASE( & test_bug12215) );
#endif
return test;
}
#if defined(BOOST_MSVC)
# pragma warning(pop)
#endif
Reference in New Issue View Git Blame Copy Permalink