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patches/gdb/6.3/720-debian_static-threads-test.patch
author "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
Sun May 20 13:48:26 2007 +0000 (2007-05-20)
changeset 112 ea15433daba0
permissions -rw-r--r--
Ah! I finally have a progress bar that doesn't stall the build!
- pipe size in Linux is only 8*512=4096 bytes
- pipe size is not setable
- when the feeding process spits out data faster than the eating
process can read it, then the feeding process stalls after 4KiB
of data sent to the pipe
- for us, the progress bar would spawn a sub-shell every line,
and the sub-shell would in turn spawn a 'date' command.
Which was sloooww as hell, and would cause some kind of a
starvation: the pipe was full most of the time, and the
feeding process was stalled all this time.

Now, we use internal variables and a little hack based onan offset
to determine the elapsed time. Much faster this way, but still
CPU-intensive. 
     1 Update staticthreads.exp to handle debugging info in libpthread.a.

     2 

     3 Index: gdb-6.3/gdb/testsuite/gdb.threads/staticthreads.exp

     4 ===================================================================

     5 --- gdb-6.3.orig/gdb/testsuite/gdb.threads/staticthreads.exp	2004-11-10 10:35:15.000000000 -0500

     6 +++ gdb-6.3/gdb/testsuite/gdb.threads/staticthreads.exp	2004-11-10 11:22:48.671121466 -0500

     7 @@ -53,6 +53,10 @@ gdb_test_multiple "continue" "$test" {

     8      -re " sem_post .*$gdb_prompt " {

     9  	pass "$test"

    10      }

    11 +    -re " (.*_)sem_post .*$gdb_prompt " {

    12 +	# Glibc uses aliases for internal symbols; match __new_sem_post.

    13 +	pass "$test"

    14 +    }

    15      -re "Program received signal .*$gdb_prompt " {

    16  	kfail gdb/1328 "$test"

    17      }

    18 @@ -64,8 +68,16 @@ gdb_test_multiple "continue" "$test" {

    19  

    20  rerun_to_main

    21  gdb_test "handle SIG32 nostop noprint pass"

    22 -set test "Handle SIG32 helps"

    23 -gdb_test "continue" " sem_post .*" "handle SIG32 helps"

    24 +set test "handle SIG32 helps"

    25 +gdb_test_multiple "continue" "$test" {

    26 +    -re " sem_post .*$gdb_prompt $" {

    27 +	pass "$test"

    28 +    }

    29 +    -re " (.*_)sem_post .*$gdb_prompt $" {

    30 +	# Glibc uses aliases for internal symbols; match __new_sem_post.

    31 +	pass "$test"

    32 +    }

    33 +}

    34  

    35  

    36  # See if info threads produces anything approaching a thread list.
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