Index: base/process/process_handle.h |
diff --git a/base/process/process_handle.h b/base/process/process_handle.h |
index 77f2c585cfcc71087596855fa6f83ac643ce9a6c..af7711bd921389875e64a8c06ee49b403fce9d0e 100644 |
--- a/base/process/process_handle.h |
+++ b/base/process/process_handle.h |
@@ -34,16 +34,37 @@ const ProcessHandle kNullProcessHandle = 0; |
const ProcessId kNullProcessId = 0; |
#endif // defined(OS_WIN) |
+// This is not a valid process ID on Linux (including Android), Mac, or Windows. |
+const uint32 kInvalidUniqueId = 0; |
+ |
// Returns the id of the current process. |
+// Note that on some platforms, this is not guaranteed to be unique across |
+// processes (use GetUniqueIdForProcess if uniqueness is required). |
BASE_EXPORT ProcessId GetCurrentProcId(); |
+// Returns a unique ID for the current process. The ID will be unique across all |
+// currently running processes within the chrome session, but note that IDs of |
+// terminated processes may be reused. This defaults to the process's process |
+// ID, but may return a different value if SetUniqueIdForProcess has been |
+// called. |
+BASE_EXPORT uint32 GetUniqueIdForProcess(); |
+ |
+// Sets the unique ID for the current process. |unique_id| may not be |
+// kInvalidUniqueId. Not thread safe. |
+// WARNING: To avoid inconsistent results from GetUniqueIdForProcess, this |
+// should only be called very early after process startup - ideally as soon |
+// after process creation as possible. |
+BASE_EXPORT void SetUniqueIdForProcess(uint32 unique_id); |
+ |
// Returns the ProcessHandle of the current process. |
BASE_EXPORT ProcessHandle GetCurrentProcessHandle(); |
-// Returns the unique ID for the specified process. This is functionally the |
-// same as Windows' GetProcessId(), but works on versions of Windows before |
-// Win XP SP1 as well. |
+// Returns the process ID for the specified process. This is functionally the |
+// same as Windows' GetProcessId(), but works on versions of Windows before Win |
+// XP SP1 as well. |
// DEPRECATED. New code should be using Process::Pid() instead. |
+// Note that on some platforms, this is not guaranteed to be unique across |
+// processes. |
BASE_EXPORT ProcessId GetProcId(ProcessHandle process); |
#if defined(OS_POSIX) |