Changes between Initial Version and Version 1 of shunfa/2011/0802

Timestamp:

Aug 2, 2011, 2:13:05 PM (14 years ago)

Author:

shunfa

Comment:

--

shunfa/2011/0802

@@ +1 @@
+= 目標 =
+ * 以 gcc 編譯 spin_or_mutex.c
+ * 編輯configure.ac makefile.am
+== spin_or_mutex.c ==
+{{{
+#!c
+//export LIBRARY_PATH=/usr/lib/i386-linux-gnu/
+#include <stdio.h>
+#include <pthread.h>
+#include <unistd.h>
+#include <sys/syscall.h>
+#include <errno.h>
+#include <sys/time.h>
+
+#define LOOPS 10000000
+
+#ifdef USE_SPINLOCK
+pthread_spinlock_t spinlock;
+#else
+pthread_mutex_t mutex;
+#endif
+
+pid_t gettid() { return syscall( __NR_gettid ); }
+
+char data[LOOPS];
+
+void *consumer(void *ptr)
+{
+    int i = 0;
+
+    printf("Consumer TID %lu\n", (unsigned long)gettid());
+
+    while (1)
+    {
+#ifdef USE_SPINLOCK
+        pthread_spin_lock(&spinlock);
+#else
+        pthread_mutex_lock(&mutex);
+#endif
+
+        if (i > LOOPS)
+        {
+#ifdef USE_SPINLOCK
+            pthread_spin_unlock(&spinlock);
+#else
+            pthread_mutex_unlock(&mutex);
+#endif
+            break;
+        }
+
+        
+        data[i] = 0;
+        i++;
+
+#ifdef USE_SPINLOCK
+        pthread_spin_unlock(&spinlock);
+#else
+        pthread_mutex_unlock(&mutex);
+#endif
+    }
+
+    return NULL;
+}
+
+int main()
+{
+    int i;
+    pthread_t thr1, thr2;
+    struct timeval tv1, tv2;
+
+#ifdef USE_SPINLOCK
+    pthread_spin_init(&spinlock, 0);
+#else
+    pthread_mutex_init(&mutex, NULL);
+#endif
+
+    // Creating the list content...
+    for (i = 0; i < LOOPS; i++){
+        data[i] = 1;    
+    }
+        
+
+    // Measuring time before starting the threads...
+    gettimeofday(&tv1, NULL);
+
+    pthread_create(&thr1, NULL, consumer, NULL);
+    pthread_create(&thr2, NULL, consumer, NULL);
+
+    pthread_join(thr1, NULL);
+    pthread_join(thr2, NULL);
+
+    // Measuring time after threads finished...
+    gettimeofday(&tv2, NULL);
+
+    if (tv1.tv_usec > tv2.tv_usec)
+    {
+        tv2.tv_sec--;
+        tv2.tv_usec += 1000000;
+    }
+
+    printf("Result - %ld.%ld\n", tv2.tv_sec - tv1.tv_sec,
+        tv2.tv_usec - tv1.tv_usec);
+
+#ifdef USE_SPINLOCK
+    pthread_spin_destroy(&spinlock);
+#else
+    pthread_mutex_destroy(&mutex);
+#endif
+
+    return 0;
+}
+
+}}}
+
+== 以 gcc 編譯 spin_or_mutex.c ==
+=== 編輯Makefile ===
+
+{{{
+#!text
+all:
+        gcc spin_or_mutex.c -o spin_or_mutex
+
+clean:
+        rm -f spin_or_mutex
+}}}
+
+== 執行 ==
+{{{
+$ make
+gcc spin_or_mutex.c -o spin_or_mutex
+/tmp/ccTHYKpZ.o: In function `main':
+spin_or_mutex.c:(.text+0xf2): undefined reference to `pthread_create'
+spin_or_mutex.c:(.text+0x116): undefined reference to `pthread_create'
+spin_or_mutex.c:(.text+0x12a): undefined reference to `pthread_join'
+spin_or_mutex.c:(.text+0x13e): undefined reference to `pthread_join'
+collect2: ld returned 1 exit status
+make: *** [all] Error 1
+}}}
+
+
+=== 修改 Makefile ===
+{{{
+#!text
+all:
+        gcc -lpthread  spin_or_mutex.c -o spin_or_mutex
+
+clean:
+        rm -f spin_or_mutex
+
+}}}
+
+== 執行 ==
+{{{
+$ make
+$ ./spin_or_mutex
+}}}
+
+ * Done!
+
+== 編輯configure.ac makefile.am ==
+== 執行 ==
+{{{
+$ autoscan 
+$ mv configure.scan configure.ac
+$ mv Makefile Makefile.in
+$ autoconf 
+$ autoheader 
+$ ./configure 
+$ make clean 
+}}}
+
+== 修改spin_or_mutex.c ==
+{{{
+#!c
+#include "config.h"
+// 以下略
+}}}
+
+== 新增Makefile.am ==
+{{{
+#!text
+bin_PROGRAMS=spin_or_mutex
+spin_or_mutex_SOURCES=spin_or_mutex.c
+}}}
+== 產生make檔 ==
+{{{
+$ aclocal
+$ autoconf
+$ automake
+}}}
+ * 修改error
+{{{
+#!text
+AM_CONDITIONAL
+AC_PROG_CC
+AC_PROG_CXX 
+AC_PROG_OBJC
+AM_PROG_AS 
+AM_PROG_GCJ 
+AM_PROG_UPC
+}}}
+
+ * ./confifure
+{{{
+$ ./configure
+$ make
+make  all-am
+make[1]: Entering directory `/home/shunfa/test/P1_Thomas'
+source='spin_or_mutex.c' object='spin_or_mutex.o' libtool=no \
+        DEPDIR=.deps depmode=none /bin/bash ./depcomp \
+        gcc -DHAVE_CONFIG_H -I.     -g -O2 -c spin_or_mutex.c
+gcc  -g -O2   -o spin_or_mutex spin_or_mutex.o  -lpthread 
+spin_or_mutex.o: In function `_start':
+(.text+0x0): multiple definition of `_start'
+/usr/lib/gcc/i486-linux-gnu/4.4.5/../../../../lib/crt1.o:(.text+0x0): first defined here
+spin_or_mutex.o:(.rodata+0x0): multiple definition of `_fp_hw'
+/usr/lib/gcc/i486-linux-gnu/4.4.5/../../../../lib/crt1.o:(.rodata+0x0): first defined here
+spin_or_mutex.o: In function `_fini':
+(.fini+0x0): multiple definition of `_fini'
+/usr/lib/gcc/i486-linux-gnu/4.4.5/../../../../lib/crti.o:(.fini+0x0): first defined here
+spin_or_mutex.o:(.rodata+0x4): multiple definition of `_IO_stdin_used'
+/usr/lib/gcc/i486-linux-gnu/4.4.5/../../../../lib/crt1.o:(.rodata.cst4+0x0): first defined here
+spin_or_mutex.o: In function `__data_start':
+(.data+0x0): multiple definition of `__data_start'
+/usr/lib/gcc/i486-linux-gnu/4.4.5/../../../../lib/crt1.o:(.data+0x0): first defined here
+spin_or_mutex.o: In function `__data_start':
+(.data+0x4): multiple definition of `__dso_handle'
+/usr/lib/gcc/i486-linux-gnu/4.4.5/crtbegin.o:(.data+0x0): first defined here
+spin_or_mutex.o: In function `_init':
+(.init+0x0): multiple definition of `_init'
+/usr/lib/gcc/i486-linux-gnu/4.4.5/../../../../lib/crti.o:(.init+0x0): first defined here
+/usr/lib/gcc/i486-linux-gnu/4.4.5/crtend.o:(.dtors+0x0): multiple definition of `__DTOR_END__'
+spin_or_mutex.o:(.dtors+0x4): first defined here
+collect2: ld returned 1 exit status
+make[1]: *** [spin_or_mutex] Error 1
+make[1]: Leaving directory `/home/shunfa/test/P1_Thomas'
+make: *** [all] Error 2
+}}}