Adding upstream version 14.2.21.upstream/14.2.21upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

10 files changed, 689 insertions, 0 deletions

diff --git a/src/boost/libs/context/performance/callcc/Jamfile.v2 b/src/boost/libs/context/performance/callcc/Jamfile.v2
new file mode 100644
index 00000000..5471cb0f
--- /dev/null
+++ b/src/boost/libs/context/performance/callcc/Jamfile.v2
@@ -0,0 +1,34 @@
+
+#          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)
+
+# For more information, see http://www.boost.org/
+
+import common ;
+import feature ;
+import indirect ;
+import modules ;
+import os ;
+import toolset ;
+
+project boost/context/performance/callcc
+    : requirements
+      <library>/boost/chrono//boost_chrono
+      <library>/boost/context//boost_context
+      <library>/boost/program_options//boost_program_options
+      <toolset>gcc,<segmented-stacks>on:<cxxflags>-fsplit-stack
+      <toolset>gcc,<segmented-stacks>on:<cxxflags>-DBOOST_USE_SEGMENTED_STACKS
+      <toolset>clang,<segmented-stacks>on:<cxxflags>-fsplit-stack
+      <toolset>clang,<segmented-stacks>on:<cxxflags>-DBOOST_USE_SEGMENTED_STACKS
+      <link>static
+      <optimization>speed
+      <threading>multi
+      <variant>release
+      <cxxflags>-DBOOST_DISABLE_ASSERTS
+    ;
+
+exe performance
+   : performance.cpp
+   ;
diff --git a/src/boost/libs/context/performance/callcc/performance.cpp b/src/boost/libs/context/performance/callcc/performance.cpp
new file mode 100644
index 00000000..21de3c73
--- /dev/null
+++ b/src/boost/libs/context/performance/callcc/performance.cpp
@@ -0,0 +1,102 @@
+
+//          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 <cstddef>
+#include <cstdlib>
+#include <iostream>
+#include <stdexcept>
+
+#include <boost/context/continuation.hpp>
+#include <boost/cstdint.hpp>
+#include <boost/program_options.hpp>
+
+#include "../clock.hpp"
+#include "../cycle.hpp"
+
+boost::uint64_t jobs = 1000000;
+
+namespace ctx = boost::context;
+
+static ctx::continuation foo( ctx::continuation && c) {
+    while ( true) {
+        c = c.resume();
+    }
+    return std::move( c);
+}
+
+duration_type measure_time() {
+    // cache warum-up
+    ctx::continuation c = ctx::callcc( foo);
+    c = c.resume();
+
+    time_point_type start( clock_type::now() );
+    for ( std::size_t i = 0; i < jobs; ++i) {
+        c = c.resume();
+    }
+    duration_type total = clock_type::now() - start;
+    total -= overhead_clock(); // overhead of measurement
+    total /= jobs;  // loops
+    total /= 2;  // 2x jump_fcontext
+
+    return total;
+}
+
+#ifdef BOOST_CONTEXT_CYCLE
+cycle_type measure_cycles() {
+    // cache warum-up
+    ctx::fixedsize_stack alloc;
+    ctx::continuation c = ctx::callcc( std::allocator_arg, alloc, foo);
+    c = c.resume();
+
+    cycle_type start( cycles() );
+    for ( std::size_t i = 0; i < jobs; ++i) {
+        c = c.resume();
+    }
+    cycle_type total = cycles() - start;
+    total -= overhead_cycle(); // overhead of measurement
+    total /= jobs;  // loops
+    total /= 2;  // 2x jump_fcontext
+
+    return total;
+}
+#endif
+
+int main( int argc, char * argv[]) {
+    try {
+        boost::program_options::options_description desc("allowed options");
+        desc.add_options()
+            ("help", "help message")
+            ("jobs,j", boost::program_options::value< boost::uint64_t >( & jobs), "jobs to run");
+
+        boost::program_options::variables_map vm;
+        boost::program_options::store(
+                boost::program_options::parse_command_line(
+                    argc,
+                    argv,
+                    desc),
+                vm);
+        boost::program_options::notify( vm);
+
+        if ( vm.count("help") ) {
+            std::cout << desc << std::endl;
+            return EXIT_SUCCESS;
+        }
+
+        boost::uint64_t res = measure_time().count();
+        std::cout << "continuation: average of " << res << " nano seconds" << std::endl;
+#ifdef BOOST_CONTEXT_CYCLE
+        res = measure_cycles();
+        std::cout << "continuation: average of " << res << " cpu cycles" << std::endl;
+#endif
+
+        return EXIT_SUCCESS;
+    } catch ( std::exception const& e) {
+        std::cerr << "exception: " << e.what() << std::endl;
+    } catch (...) {
+        std::cerr << "unhandled exception" << std::endl;
+    }
+    return EXIT_FAILURE;
+}
diff --git a/src/boost/libs/context/performance/clock.hpp b/src/boost/libs/context/performance/clock.hpp
new file mode 100644
index 00000000..d8222bb8
--- /dev/null
+++ b/src/boost/libs/context/performance/clock.hpp
@@ -0,0 +1,45 @@
+
+//          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)
+//
+#ifndef CLOCK_H
+#define CLOCK_H
+
+#include <algorithm>
+#include <cstddef>
+#include <numeric>
+#include <vector>
+
+#include <boost/assert.hpp>
+#include <boost/chrono.hpp>
+#include <boost/cstdint.hpp>
+
+typedef boost::chrono::high_resolution_clock    clock_type;
+typedef clock_type::duration                    duration_type;
+typedef clock_type::time_point                  time_point_type;
+
+struct clock_overhead
+{
+    boost::uint64_t operator()()
+    {
+        time_point_type start( clock_type::now() );
+        return ( clock_type::now() - start).count();
+    }
+};
+
+inline
+duration_type overhead_clock()
+{
+    std::size_t iterations( 10);
+    std::vector< boost::uint64_t >  overhead( iterations, 0);
+    for ( std::size_t i = 0; i < iterations; ++i)
+        std::generate(
+            overhead.begin(), overhead.end(),
+            clock_overhead() );
+    BOOST_ASSERT( overhead.begin() != overhead.end() );
+    return duration_type( std::accumulate( overhead.begin(), overhead.end(), 0) / iterations);
+}
+
+#endif // CLOCK_H
diff --git a/src/boost/libs/context/performance/cycle.hpp b/src/boost/libs/context/performance/cycle.hpp
new file mode 100644
index 00000000..c26c8598
--- /dev/null
+++ b/src/boost/libs/context/performance/cycle.hpp
@@ -0,0 +1,26 @@
+
+//          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)
+
+#ifndef CYCLE_H
+#define CYCLE_H
+
+// x86_64
+// test x86_64 before i386 because icc might
+// define __i686__ for x86_64 too
+#if defined(__x86_64__) || defined(__x86_64) \
+    || defined(__amd64__) || defined(__amd64) \
+    || defined(_M_X64) || defined(_M_AMD64)
+# include "cycle_x86-64.hpp"
+// i386
+#elif defined(i386) || defined(__i386__) || defined(__i386) \
+    || defined(__i486__) || defined(__i586__) || defined(__i686__) \
+    || defined(__X86__) || defined(_X86_) || defined(__THW_INTEL__) \
+    || defined(__I86__) || defined(__INTEL__) || defined(__IA32__) \
+    || defined(_M_IX86) || defined(_I86_)
+# include "cycle_i386.hpp"
+#endif
+
+#endif // CYCLE_H
diff --git a/src/boost/libs/context/performance/cycle_i386.hpp b/src/boost/libs/context/performance/cycle_i386.hpp
new file mode 100644
index 00000000..a3eb7039
--- /dev/null
+++ b/src/boost/libs/context/performance/cycle_i386.hpp
@@ -0,0 +1,83 @@
+
+//          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)
+
+#ifndef CYCLE_I386_H
+#define CYCLE_I386_H
+
+#include <algorithm>
+#include <numeric>
+#include <cstddef>
+#include <vector>
+
+#include <boost/assert.hpp>
+#include <boost/bind.hpp>
+#include <boost/cstdint.hpp>
+
+#define BOOST_CONTEXT_CYCLE
+
+typedef boost::uint64_t cycle_type;
+
+#if _MSC_VER
+inline
+cycle_type cycles()
+{
+    cycle_type c;
+    __asm {
+        cpuid 
+        rdtsc
+        mov dword ptr [c + 0], eax
+        mov dword ptr [c + 4], edx
+    }
+    return c;
+}
+#elif defined(__GNUC__) || \
+      defined(__INTEL_COMPILER) || defined(__ICC) || defined(_ECC) || defined(__ICL)
+inline
+cycle_type cycles()
+{
+    boost::uint32_t lo, hi;
+
+    __asm__ __volatile__ (
+        "xorl %%eax, %%eax\n"
+        "cpuid\n"
+        ::: "%eax", "%ebx", "%ecx", "%edx"
+    );
+    __asm__ __volatile__ ("rdtsc" : "=a" (lo), "=d" (hi) );
+    __asm__ __volatile__ (
+        "xorl %%eax, %%eax\n"
+        "cpuid\n"
+        ::: "%eax", "%ebx", "%ecx", "%edx"
+    );
+
+    return ( cycle_type)hi << 32 | lo; 
+}
+#else
+# error "this compiler is not supported"
+#endif
+
+struct cycle_overhead
+{
+    cycle_type operator()()
+    {
+        cycle_type start( cycles() );
+        return cycles() - start;
+    }
+};
+
+inline
+cycle_type overhead_cycle()
+{
+    std::size_t iterations( 10);
+    std::vector< cycle_type >  overhead( iterations, 0);
+    for ( std::size_t i( 0); i < iterations; ++i)
+        std::generate(
+            overhead.begin(), overhead.end(),
+            cycle_overhead() );
+    BOOST_ASSERT( overhead.begin() != overhead.end() );
+    return std::accumulate( overhead.begin(), overhead.end(), 0) / iterations;
+}
+
+#endif // CYCLE_I386_H
diff --git a/src/boost/libs/context/performance/cycle_x86-64.hpp b/src/boost/libs/context/performance/cycle_x86-64.hpp
new file mode 100644
index 00000000..fae0226c
--- /dev/null
+++ b/src/boost/libs/context/performance/cycle_x86-64.hpp
@@ -0,0 +1,79 @@
+
+//          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)
+
+#ifndef CYCLE_X86_64_H
+#define CYCLE_X86_64_H
+
+#include <algorithm>
+#include <numeric>
+#include <cstddef>
+#include <vector>
+
+#include <boost/assert.hpp>
+#include <boost/bind.hpp>
+#include <boost/cstdint.hpp>
+
+#define BOOST_CONTEXT_CYCLE
+
+typedef boost::uint64_t cycle_type;
+
+#if _MSC_VER >= 1400
+# include <intrin.h>
+# pragma intrinsic(__rdtsc)
+inline
+cycle_type cycles()
+{ return __rdtsc(); }
+#elif defined(__INTEL_COMPILER) || defined(__ICC) || defined(_ECC) || defined(__ICL)
+inline
+cycle_type cycles()
+{ return __rdtsc(); }
+#elif defined(__GNUC__) || defined(__SUNPRO_C)
+inline
+cycle_type cycles()
+{
+    boost::uint32_t lo, hi;
+
+    __asm__ __volatile__ (
+        "xorl %%eax, %%eax\n"
+        "cpuid\n"
+        ::: "%rax", "%rbx", "%rcx", "%rdx"
+    );
+    __asm__ __volatile__ ("rdtsc" : "=a" (lo), "=d" (hi) );
+    __asm__ __volatile__ (
+        "xorl %%eax, %%eax\n"
+        "cpuid\n"
+        ::: "%rax", "%rbx", "%rcx", "%rdx"
+    );
+
+    return ( cycle_type)hi << 32 | lo; 
+}
+#else
+# error "this compiler is not supported"
+#endif
+
+struct cycle_overhead
+{
+    cycle_type operator()()
+    {
+        cycle_type start( cycles() );
+        return cycles() - start;
+    }
+};
+
+inline
+cycle_type overhead_cycle()
+{
+    std::size_t iterations( 10);
+    std::vector< cycle_type >  overhead( iterations, 0);
+    for ( std::size_t i( 0); i < iterations; ++i)
+        std::generate(
+            overhead.begin(), overhead.end(),
+            cycle_overhead() );
+    BOOST_ASSERT( overhead.begin() != overhead.end() );
+    return std::accumulate( overhead.begin(), overhead.end(), 0) / iterations;
+}
+
+#endif // CYCLE_X86_64_H
diff --git a/src/boost/libs/context/performance/fcontext/Jamfile.v2 b/src/boost/libs/context/performance/fcontext/Jamfile.v2
new file mode 100644
index 00000000..eeb2a5d2
--- /dev/null
+++ b/src/boost/libs/context/performance/fcontext/Jamfile.v2
@@ -0,0 +1,34 @@
+
+#          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)
+
+# For more information, see http://www.boost.org/
+
+import common ;
+import feature ;
+import indirect ;
+import modules ;
+import os ;
+import toolset ;
+
+project boost/context/performance/fcontext
+    : requirements
+      <library>/boost/chrono//boost_chrono
+      <library>/boost/context//boost_context
+      <library>/boost/program_options//boost_program_options
+      <toolset>gcc,<segmented-stacks>on:<cxxflags>-fsplit-stack
+      <toolset>gcc,<segmented-stacks>on:<cxxflags>-DBOOST_USE_SEGMENTED_STACKS
+      <toolset>clang,<segmented-stacks>on:<cxxflags>-fsplit-stack
+      <toolset>clang,<segmented-stacks>on:<cxxflags>-DBOOST_USE_SEGMENTED_STACKS
+      <link>static
+      <optimization>speed
+      <threading>multi
+      <variant>release
+      <cxxflags>-DBOOST_DISABLE_ASSERTS
+    ;
+
+exe performance
+   : performance.cpp
+   ;
diff --git a/src/boost/libs/context/performance/fcontext/performance.cpp b/src/boost/libs/context/performance/fcontext/performance.cpp
new file mode 100644
index 00000000..ed271dcc
--- /dev/null
+++ b/src/boost/libs/context/performance/fcontext/performance.cpp
@@ -0,0 +1,150 @@
+
+//          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 <cstddef>
+#include <cstdlib>
+#include <iostream>
+#include <stdexcept>
+
+#include <boost/context/detail/fcontext.hpp>
+#include <boost/cstdint.hpp>
+#include <boost/program_options.hpp>
+
+#include "../clock.hpp"
+#include "../cycle.hpp"
+
+template< std::size_t Max, std::size_t Default, std::size_t Min >
+class simple_stack_allocator
+{
+public:
+    static std::size_t maximum_stacksize()
+    { return Max; }
+
+    static std::size_t default_stacksize()
+    { return Default; }
+
+    static std::size_t minimum_stacksize()
+    { return Min; }
+
+    void * allocate( std::size_t size) const
+    {
+        BOOST_ASSERT( minimum_stacksize() <= size);
+        BOOST_ASSERT( maximum_stacksize() >= size);
+
+        void * limit = std::malloc( size);
+        if ( ! limit) throw std::bad_alloc();
+
+        return static_cast< char * >( limit) + size;
+    }
+
+    void deallocate( void * vp, std::size_t size) const
+    {
+        BOOST_ASSERT( vp);
+        BOOST_ASSERT( minimum_stacksize() <= size);
+        BOOST_ASSERT( maximum_stacksize() >= size);
+
+        void * limit = static_cast< char * >( vp) - size;
+        std::free( limit);
+    }
+};
+
+typedef simple_stack_allocator<
+            8 * 1024 * 1024, 64 * 1024, 8 * 1024
+        >                                       stack_allocator;
+
+boost::uint64_t jobs = 1000000;
+
+static void foo( boost::context::detail::transfer_t t_) {
+    boost::context::detail::transfer_t t = t_;
+    while ( true) {
+        t = boost::context::detail::jump_fcontext( t.fctx, 0);
+    }
+}
+
+duration_type measure_time_fc() {
+    stack_allocator stack_alloc;
+    boost::context::detail::fcontext_t ctx = boost::context::detail::make_fcontext(
+            stack_alloc.allocate( stack_allocator::default_stacksize() ),
+            stack_allocator::default_stacksize(),
+            foo);
+
+    // cache warum-up
+    boost::context::detail::transfer_t t = boost::context::detail::jump_fcontext( ctx, 0);
+
+    time_point_type start( clock_type::now() );
+    for ( std::size_t i = 0; i < jobs; ++i) {
+        t = boost::context::detail::jump_fcontext( t.fctx, 0);
+    }
+    duration_type total = clock_type::now() - start;
+    total -= overhead_clock(); // overhead of measurement
+    total /= jobs;  // loops
+    total /= 2;  // 2x jump_fcontext
+
+    return total;
+}
+
+#ifdef BOOST_CONTEXT_CYCLE
+cycle_type measure_cycles_fc() {
+    stack_allocator stack_alloc;
+    boost::context::detail::fcontext_t ctx = boost::context::detail::make_fcontext(
+            stack_alloc.allocate( stack_allocator::default_stacksize() ),
+            stack_allocator::default_stacksize(),
+            foo);
+
+    // cache warum-up
+    boost::context::detail::transfer_t t = boost::context::detail::jump_fcontext( ctx, 0);
+
+    cycle_type start( cycles() );
+    for ( std::size_t i = 0; i < jobs; ++i) {
+        t = boost::context::detail::jump_fcontext( t.fctx, 0);
+    }
+    cycle_type total = cycles() - start;
+    total -= overhead_cycle(); // overhead of measurement
+    total /= jobs;  // loops
+    total /= 2;  // 2x jump_fcontext
+
+    return total;
+}
+#endif
+
+int main( int argc, char * argv[])
+{
+    try
+    {
+        boost::program_options::options_description desc("allowed options");
+        desc.add_options()
+            ("help", "help message")
+            ("jobs,j", boost::program_options::value< boost::uint64_t >( & jobs), "jobs to run");
+
+        boost::program_options::variables_map vm;
+        boost::program_options::store(
+                boost::program_options::parse_command_line(
+                    argc,
+                    argv,
+                    desc),
+                vm);
+        boost::program_options::notify( vm);
+
+        if ( vm.count("help") ) {
+            std::cout << desc << std::endl;
+            return EXIT_SUCCESS;
+        }
+
+        boost::uint64_t res = measure_time_fc().count();
+        std::cout << "fcontext_t: average of " << res << " nano seconds" << std::endl;
+#ifdef BOOST_CONTEXT_CYCLE
+        res = measure_cycles_fc();
+        std::cout << "fcontext_t: average of " << res << " cpu cycles" << std::endl;
+#endif
+
+        return EXIT_SUCCESS;
+    }
+    catch ( std::exception const& e)
+    { std::cerr << "exception: " << e.what() << std::endl; }
+    catch (...)
+    { std::cerr << "unhandled exception" << std::endl; }
+    return EXIT_FAILURE;
+}
diff --git a/src/boost/libs/context/performance/fiber/Jamfile.v2 b/src/boost/libs/context/performance/fiber/Jamfile.v2
new file mode 100644
index 00000000..5e9f54f3
--- /dev/null
+++ b/src/boost/libs/context/performance/fiber/Jamfile.v2
@@ -0,0 +1,34 @@
+
+#          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)
+
+# For more information, see http://www.boost.org/
+
+import common ;
+import feature ;
+import indirect ;
+import modules ;
+import os ;
+import toolset ;
+
+project boost/context/performance/fiber
+    : requirements
+      <library>/boost/chrono//boost_chrono
+      <library>/boost/context//boost_context
+      <library>/boost/program_options//boost_program_options
+      <toolset>gcc,<segmented-stacks>on:<cxxflags>-fsplit-stack
+      <toolset>gcc,<segmented-stacks>on:<cxxflags>-DBOOST_USE_SEGMENTED_STACKS
+      <toolset>clang,<segmented-stacks>on:<cxxflags>-fsplit-stack
+      <toolset>clang,<segmented-stacks>on:<cxxflags>-DBOOST_USE_SEGMENTED_STACKS
+      <link>static
+      <optimization>speed
+      <threading>multi
+      <variant>release
+      <cxxflags>-DBOOST_DISABLE_ASSERTS
+    ;
+
+exe performance
+   : performance.cpp
+   ;
diff --git a/src/boost/libs/context/performance/fiber/performance.cpp b/src/boost/libs/context/performance/fiber/performance.cpp
new file mode 100644
index 00000000..e49deecd
--- /dev/null
+++ b/src/boost/libs/context/performance/fiber/performance.cpp
@@ -0,0 +1,102 @@
+
+//          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 <cstddef>
+#include <cstdlib>
+#include <iostream>
+#include <stdexcept>
+
+#include <boost/context/fiber.hpp>
+#include <boost/cstdint.hpp>
+#include <boost/program_options.hpp>
+
+#include "../clock.hpp"
+#include "../cycle.hpp"
+
+boost::uint64_t jobs = 1000000;
+
+namespace ctx = boost::context;
+
+static ctx::fiber foo( ctx::fiber && f) {
+    while ( true) {
+        f = std::move( f).resume();
+    }
+    return ctx::fiber{};
+}
+
+duration_type measure_time() {
+    // cache warum-up
+    ctx::fiber f{ foo };
+    f = std::move( f).resume();
+
+    time_point_type start( clock_type::now() );
+    for ( std::size_t i = 0; i < jobs; ++i) {
+        f = std::move( f).resume();
+    }
+    duration_type total = clock_type::now() - start;
+    total -= overhead_clock(); // overhead of measurement
+    total /= jobs;  // loops
+    total /= 2;  // 2x jump_fcontext
+
+    return total;
+}
+
+#ifdef BOOST_CONTEXT_CYCLE
+cycle_type measure_cycles() {
+    // cache warum-up
+    ctx::fixedsize_stack alloc;
+    ctx::fiber f{ std::allocator_arg, alloc, foo };
+    f = std::move( f).resume();
+
+    cycle_type start( cycles() );
+    for ( std::size_t i = 0; i < jobs; ++i) {
+        f = std::move( f).resume();
+    }
+    cycle_type total = cycles() - start;
+    total -= overhead_cycle(); // overhead of measurement
+    total /= jobs;  // loops
+    total /= 2;  // 2x jump_fcontext
+
+    return total;
+}
+#endif
+
+int main( int argc, char * argv[]) {
+    try {
+        boost::program_options::options_description desc("allowed options");
+        desc.add_options()
+            ("help", "help message")
+            ("jobs,j", boost::program_options::value< boost::uint64_t >( & jobs), "jobs to run");
+
+        boost::program_options::variables_map vm;
+        boost::program_options::store(
+                boost::program_options::parse_command_line(
+                    argc,
+                    argv,
+                    desc),
+                vm);
+        boost::program_options::notify( vm);
+
+        if ( vm.count("help") ) {
+            std::cout << desc << std::endl;
+            return EXIT_SUCCESS;
+        }
+
+        boost::uint64_t res = measure_time().count();
+        std::cout << "fiber: average of " << res << " nano seconds" << std::endl;
+#ifdef BOOST_CONTEXT_CYCLE
+        res = measure_cycles();
+        std::cout << "fiber: average of " << res << " cpu cycles" << std::endl;
+#endif
+
+        return EXIT_SUCCESS;
+    } catch ( std::exception const& e) {
+        std::cerr << "exception: " << e.what() << std::endl;
+    } catch (...) {
+        std::cerr << "unhandled exception" << std::endl;
+    }
+    return EXIT_FAILURE;
+}