When the 9P connection is closed, reads on the connection will keep
returning 0. So, fossil ends up looping forever, trying to read a 9P
message, consuming 100% CPU. The fix interprets 0 bytes read as EOF.
Reproduce by killing the 9pserve process serving the fossil service, or
by listening on tcp and using 9p(1).
Programs that want to background themselves now need
to define threadmaybackground returning 1.
This avoids a confusing (to people and debuggers)
extra parent process for all the threaded programs
that will never want to background themselves.
Remote whitespace at the ends of lines.
Remove blank lines from the ends of files.
Change modes on source files so that they
are not executable.
Signed-off-by: Dan Cross <cross@gajendra.net>
fixed warnings:
src/cmd/fossil/disk.c:37:14: warning: use of GNU 'missing =' extension in designator [-Wgnu-designator]
src/cmd/fossil/disk.c:38:14: warning: use of GNU 'missing =' extension in designator [-Wgnu-designator]
src/cmd/fossil/disk.c:39:14: warning: use of GNU 'missing =' extension in designator [-Wgnu-designator]
src/cmd/fossil/disk.c:40:13: warning: use of GNU 'missing =' extension in designator [-Wgnu-designator]
src/cmd/fossil/disk.c:41:14: warning: use of GNU 'missing =' extension in designator [-Wgnu-designator]
src/libndb/ndbreorder.c:41:55: warning: for loop has empty body [-Wempty-body]
ignored warnings:
src/cmd/acid/dbg.y:393:9: warning: array index -1 is before the beginning of the array [-Warray-bounds]
src/cmd/bc.y:1327:9: warning: array index -1 is before the beginning of the array [-Warray-bounds]
src/cmd/bc.y:1327:9: warning: array index -1 is before the beginning of the array [-Warray-bounds]
src/cmd/grep/grep.y:420:9: warning: array index -1 is before the beginning of the array [-Warray-bounds]
src/cmd/grep/grep.y:420:9: warning: array index -1 is before the beginning of the array [-Warray-bounds]
src/cmd/hoc/hoc.y:692:9: warning: array index -1 is before the beginning of the array [-Warray-bounds]
src/cmd/hoc/hoc.y:692:9: warning: array index -1 is before the beginning of the array [-Warray-bounds]
src/cmd/lex/parser.y:886:9: warning: array index -1 is before the beginning of the array [-Warray-bounds]
src/cmd/rc/syn.y:303:9: warning: array index -1 is before the beginning of the array [-Warray-bounds]
src/cmd/units.y:1003:9: warning: array index -1 is before the beginning of the array [-Warray-bounds]
src/libregexp/regcomp.c:19:16: warning: variable 'reprog' is not needed and will not be emitted [-Wunneeded-internal-declaration]
LGTM=rsc
R=rsc
https://codereview.appspot.com/158250043
