tkil

/*

  Compile line for native build:

    PATH=/usr/local/gcc/bin:$PATH \
    g++ -O3 -std=c++11 -o vector-swap-demo vector-swap-demo.cpp \
      -I/usr/local/boost/include \
      -pthread -lboost_thread-mt -lpthread -lrt

  Compile line for cross build:

tkil

#include <stdio.h>
#include <stdlib.h>

/***************************** stddef.h *****************************/
/* (not really, this is cribbed from gcc info pages...)             */

#define offsetof(TYPE, MEMBER)  __builtin_offsetof (TYPE, MEMBER)

/***************************** kernel.h *****************************/

tkil

/*

  Compiling this code gives me a warning about old-style casts:

    $ g++ -Wold-style-cast -o g++-warnings-check g++-warnings-check.cpp -lz
    g++-warnings-check.cpp: In function ‘int main()’:
    g++-warnings-check.cpp:49:20: warning: use of old-style cast [-Wold-style-cast]

  "deflateInit" is actually a macro:

tkil

typical output:

$ make -f semaphore.make demo
./semaphore-boost
./semaphore-boost: 10 threads * 100000 reps = 1000000 total; elapsed = 6833 milliseconds
./semaphore-mutex
./semaphore-mutex: 10 threads * 100000 reps = 1000000 total; elapsed = 160 milliseconds
./semaphore-pthread
./semaphore-pthread: 10 threads * 100000 reps = 1000000 total; elapsed = 150 milliseconds

tkil

/* compile line: gcc -o test xlib-delay-required.c -lX11 */

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>

#include <X11/Xlib.h>

int
main(int argc, char* argv[])