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Diffstat (limited to 'gcc/objc/THREADS.MACH')
| -rw-r--r-- | gcc/objc/THREADS.MACH | 23 |
1 files changed, 0 insertions, 23 deletions
diff --git a/gcc/objc/THREADS.MACH b/gcc/objc/THREADS.MACH deleted file mode 100644 index 55de6637866..00000000000 --- a/gcc/objc/THREADS.MACH +++ /dev/null @@ -1,23 +0,0 @@ -This readme refers to the file thr-mach.c. - -Under mach, thread priorities are kinda strange-- any given thread has -a MAXIMUM priority and a BASE priority. The BASE priority is the -current priority of the thread and the MAXIMUM is the maximum possible -priority the thread can assume. The developer can lower, but never -raise the maximum priority. - -The gcc concept of thread priorities is that they run at one of three -levels; interactive, background, and low. - -Under mach, this is translated to: - -interactive -- set priority to maximum -background -- set priority to 2/3 of maximum -low -- set priority to 1/3 of maximum - -This means that it is possible for a thread with the priority of -interactive to actually run at a lower priority than another thread -with a background, or even low, priority if the developer has modified -the maximum priority. - - |