X-Git-Url: https://gapil.gnulinux.it/gitweb/?p=gapil.git;a=blobdiff_plain;f=sources%2FWriteShm.c;h=ce5ea496b357b79d257b6c9c4c066272e5917f09;hp=db5b132ff817643621d5cfa03bea3bffb812e009;hb=d451ac30382ae398b9a2242a4f82b3438affc8a7;hpb=31f55ec58bee8b2c4993633849b7da4e30cab222

diff --git a/sources/WriteShm.c b/sources/WriteShm.c
index db5b132..ce5ea49 100644
--- a/sources/WriteShm.c
+++ b/sources/WriteShm.c
@@ -20,18 +20,18 @@
  *
  * File WriteShm.c: 
  *
- * An example of POSIX shared memory use: wwrite some content to a
+ * An example of POSIX shared memory use: write some content to a
  * shared memory segment
  *
  * Author: S. Piccardi Jan. 2003
  *
  *****************************************************************************/
-#include <sys/types.h>     /* primitive system data types */
-#include <sys/stat.h>
-#include <dirent.h>        /* directory */
-#include <stdlib.h>        /* C standard library */
-#include <unistd.h>        /* unix standard library */
-#include <stdio.h>         /* standard I/O library */
+#include <sys/types.h>   /* primitive system data types */
+#include <sys/stat.h>    /* file characteristics constants and functions */
+#include <dirent.h>      /* directory operation constants and functions */
+#include <stdlib.h>      /* C standard library */
+#include <unistd.h>      /* unix standard library */
+#include <stdio.h>       /* standard I/O library */
 
 #include "Gapil.h"
 #include "macros.h"
@@ -58,21 +58,21 @@ int main(int argc, char *argv[])
 	/* 
 	 * Handling options 
 	 */ 
-	case 's':                                     /* set pause (in sec.) */
+	case 's':   /* set pause (in sec.) */
 	    size = strtol(optarg, NULL, 10);
 	    break;
-	case 'f':                                     /* set pause (in sec.) */
+	case 'f':   /* set pause (in sec.) */
 	    file_name = optarg;
 	    break;
-	case 'h':                                             /* help option */
+	case 'h':   /* help option */
 	    printf("Wrong -h option use\n");
 	    usage();
 	    return -1;
 	    break;
-	case '?':                                    /* unrecognized options */
+	case '?':   /* unrecognized options */
 	    printf("Unrecognized options -%c\n",optopt);
 	    usage();
-	default:                                       /* should not reached */
+	default:    /* should not reached */
 	    usage();
 	}
     }
@@ -83,12 +83,13 @@ int main(int argc, char *argv[])
      *		      Main code beginning
      * 
      * ***********************************************************/
-    if ((argc - optind) != 1) {          /* There must be remaing parameters */
+    if ((argc - optind) != 1) {  /* There must be remaing parameters */
 	printf("Wrong number of arguments %d\n", argc - optind);
         usage();
     }
+    /* get a Mutex */
     mutex_file = tempnam("/tmp","mutex");
-    if ((mutex = CreateMutex(mutex_file)) == -1) {            /* get a Mutex */
+    if ((mutex = CreateMutex(mutex_file)) == -1) { 
 	perror("Cannot create mutex");
 	goto errmutex;
     }