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7060836: RHEL 5.5 and 5.6 should support UseNUMA

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Add a wrapper for sched_getcpu() for systems where libc lacks it

Reviewed-by: ysr
This commit is contained in:
Andrew John Hughes 2011-08-05 16:50:14 -07:00 • committed by Igor Veresov
parent 427c404400
commit c4b791d93a
2 changed files with 25 additions and 0 deletions
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hotspot/src/os/linux/vm/os_linux.hpp
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@ -263,6 +263,7 @@ private:
static void set_numa_tonode_memory(numa_tonode_memory_func_t func) { _numa_tonode_memory = func; }
static void set_numa_interleave_memory(numa_interleave_memory_func_t func) { _numa_interleave_memory = func; }
static void set_numa_all_nodes(unsigned long* ptr) { _numa_all_nodes = ptr; }
static int sched_getcpu_syscall(void);
public:
static int sched_getcpu() { return _sched_getcpu != NULL ? _sched_getcpu() : -1; }
static int numa_node_to_cpus(int node, unsigned long *buffer, int bufferlen) {