Author: rjung
Date: Thu Jun 14 17:04:14 2012
New Revision: 1350339
URL: http://svn.apache.org/viewvc?rev=1350339&view=rev
Log:
Add CPU information to OS info for Linux.
This was already available under Windows and Solaris.
Modified:
tomcat/native/branches/1.1.x/native/os/unix/system.c
tomcat/native/branches/1.1.x/xdocs/miscellaneous/changelog.xml
Modified: tomcat/native/branches/1.1.x/native/os/unix/system.c
URL:
http://svn.apache.org/viewvc/tomcat/native/branches/1.1.x/native/os/unix/system.c?rev=1350339&r1=1350338&r2=1350339&view=diff
==============================================================================
--- tomcat/native/branches/1.1.x/native/os/unix/system.c (original)
+++ tomcat/native/branches/1.1.x/native/os/unix/system.c Thu Jun 14 17:04:14
2012
@@ -127,6 +127,15 @@ TCN_IMPLEMENT_CALL(jint, OS, info)(TCN_S
if (sysinfo(&info))
rv = apr_get_os_error();
else {
+ static char buf[1024];
+ unsigned long user = 0;
+ unsigned long system = 0;
+ long idle = 0;
+ long long starttime = 0;
+ int fd;
+ int len;
+ long sys_clk_tck = sysconf(_SC_CLK_TCK); /* number of system ticks
per second */
+
pvals[0] = (jlong)(info.totalram * info.mem_unit);
pvals[1] = (jlong)(info.freeram * info.mem_unit);
pvals[2] = (jlong)(info.totalswap * info.mem_unit);
@@ -134,6 +143,54 @@ TCN_IMPLEMENT_CALL(jint, OS, info)(TCN_S
pvals[4] = (jlong)(info.sharedram * info.mem_unit);
pvals[5] = (jlong)(info.bufferram * info.mem_unit);
pvals[6] = (jlong)(100 - (info.freeram * 100 / info.totalram));
+
+ if (sys_clk_tck >= 0) {
+ /* Get total CPU times from /proc/stat */
+ /* Example for the first line: cpu 2095497 8176 3280198
908667841 1543576 28867 375399 0 0 */
+ /* Accoring to the man pages, the numbers are given in units
of USER_HZ:
+ * user mode, user mode with low priority (nice), system mode,
and the idle task.
+ * Additional values can be ignored. */
+ fd = open("/proc/stat", O_RDONLY);
+ if (fd != -1) {
+ len = read(fd, buf, sizeof buf - 1);
+ if (len > 0) {
+ buf[len] = '\0';
+ if (sscanf(buf, "cpu %lu %*d %lu %ld", &user, &system,
&idle) == 3) {
+ pvals[7] = (jlong)(idle * 1000 / sys_clk_tck *
1000); /* Idle Time in microseconds */
+ pvals[8] = (jlong)(system * 1000 / sys_clk_tck *
1000); /* Kernel Time in microseconds */
+ pvals[9] = (jlong)(user * 1000 / sys_clk_tck *
1000); /* User Time in microseconds */
+ }
+ }
+ close(fd);
+ }
+ /* Get process CPU times from /proc/self/stat */
+ /* Example for the first line:
+ * 6309 (csh) S 6308 6309 6309 34816 7124 4202496 15119 252261
1 30 21 58 1537 1447 20 0 1 0 916031966 ... */
+ /* Parsing it according to man -s 5 proci:
+ * pid %d, comm %s, state %c, ppid %d pgrp %d, session %d,
tty_nr %d, tpgid %d, flags %u,
+ * minflt %lu, cminflt %lu, majflt %lu, cmajflt %lu,
+ * utime %lu (!), stime %lu (!), cutime %ld (!), cstime %ld
(!),
+ * priority %ld, nice %ld, num_threads %ld, itrealvalue %ld,
+ * starttime %llu (!) */
+ fd = open("/proc/self/stat", O_RDONLY);
+ if (fd != -1) {
+ len = read(fd, buf, sizeof buf - 1);
+ if (len > 0) {
+ buf[len] = '\0';
+ if (sscanf(buf, "%*d %*s %*c %*d %*d %*d %*d %*d %*u"
+ " %*u %*u %*u %*u"
+ " %lu %lu %*d %*d"
+ " %*d %*d %*d %*d"
+ "%llu", &user, &system, &starttime) ==
3) {
+ pvals[10] = (jlong)(apr_time_now() -
apr_time_make(info.uptime - starttime / sys_clk_tck, 0)); /* Process creation
time (apr_time_t) */
+ pvals[11] = (jlong)(system * 1000 / sys_clk_tck *
1000); /* Process System Time in microseconds */
+ pvals[12] = (jlong)(user * 1000 / sys_clk_tck *
1000); /* Process User Time in microseconds */
+ }
+ }
+ close(fd);
+ }
+ }
+
rv = APR_SUCCESS;
}
}
Modified: tomcat/native/branches/1.1.x/xdocs/miscellaneous/changelog.xml
URL:
http://svn.apache.org/viewvc/tomcat/native/branches/1.1.x/xdocs/miscellaneous/changelog.xml?rev=1350339&r1=1350338&r2=1350339&view=diff
==============================================================================
--- tomcat/native/branches/1.1.x/xdocs/miscellaneous/changelog.xml (original)
+++ tomcat/native/branches/1.1.x/xdocs/miscellaneous/changelog.xml Thu Jun 14
17:04:14 2012
@@ -36,6 +36,14 @@
new documentation project for Tomcat Native was started.
</p>
</section>
+<section name="Changes between 1.1.24 and 1.1.25">
+ <changelog>
+ <update>
+ Add CPU information to OS info for Linux.
+ This was already available under Windows and Solaris. (rjung)
+ </update>
+ </changelog>
+</section>
<section name="Changes between 1.1.23 and 1.1.24">
<changelog>
<update>
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