X-Git-Url: http://git.efficios.com/?a=blobdiff_plain;f=gdb%2Fgdbsupport%2Fptid.h;h=232593af5d2daf304b2d24306da0b6588b79de8f;hb=refs%2Fheads%2Finferior-thread-map-2020-01-16;hp=ef52d55512600c3b108dcdee8e029523c430501d;hpb=2301204a3b3cd6553f7490498b3adc5973157c1b;p=deliverable%2Fbinutils-gdb.git

diff --git a/gdb/gdbsupport/ptid.h b/gdb/gdbsupport/ptid.h
index ef52d55512..232593af5d 100644
--- a/gdb/gdbsupport/ptid.h
+++ b/gdb/gdbsupport/ptid.h
@@ -32,6 +32,8 @@
    thread_stratum target that might want to sit on top.
 */
 
+#include <functional>
+
 class ptid_t
 {
 public:
@@ -143,6 +145,17 @@ private:
   long m_tid;
 };
 
+struct hash_ptid
+{
+  size_t operator() (const ptid_t &ptid) const
+  {
+    std::hash<long> long_hash;
+    return (long_hash (ptid.pid ())
+	    + long_hash (ptid.lwp ())
+	    + long_hash (ptid.tid ()));
+  }
+};
+
 /* The null or zero ptid, often used to indicate no process. */
 
 extern const ptid_t null_ptid;