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--- base/process/process_metrics_freebsd.cc.orig 2016-03-25 13:04:44 UTC
+++ base/process/process_metrics_freebsd.cc
@@ -12,6 +12,9 @@
#include "base/macros.h"
#include "base/sys_info.h"
+#include <unistd.h> /* getpagesize() */
+#include <fcntl.h> /* O_RDONLY */
+
namespace base {
ProcessMetrics::ProcessMetrics(ProcessHandle process)
@@ -121,4 +124,23 @@ size_t GetSystemCommitCharge() {
return mem_total - (mem_free*pagesize) - (mem_inactive*pagesize);
}
+int GetNumberOfThreads(ProcessHandle process) {
+ // Taken from FreeBSD top (usr.bin/top/machine.c)
+
+ kvm_t* kd = kvm_open(NULL, "/dev/null", NULL, O_RDONLY, "kvm_open");
+ if (kd == NULL)
+ return 0;
+
+ struct kinfo_proc* pbase;
+ int nproc;
+ pbase = kvm_getprocs(kd, KERN_PROC_PID, process, &nproc);
+ if (pbase == NULL)
+ return 0;
+
+ if (kvm_close(kd) == -1)
+ return 0;
+
+ return nproc;
+}
+
} // namespace base
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