* error.c, net_db.c, putenv.c, stime.c: Removed declaration of
errno variable (can be a macro on some systems, for example when
using linux libc with threads).
* error.c, filesys.c, gc.c, ioext.c, iselect.c, net_db.c, ports.c,
posix.c, print.c, putenv.c, scmsigs.c, script.c, simpos.c, smob.c,
socket.c, srcprop.c, stime.c, strop.c, unif.c, vports.c: Added
#include <errno.h> in these 20 out of 100 files.
and we don't want that.
(INCLUDES): Removed all -I options except for the root source
directory and the root build directory.
* *.*: Change includes so that they always use the "prefixes"
libguile/, qt/, guile-readline/, or libltdl/.
(Thanks to Tim Mooney.)
* iselect.c: Test for MISSING_BZERO_DECL, not DECLARE_BZERO; see
today's change to ../configure.in.
* scmsigs.c: Test for MISSING_USLEEP_DECL, not DECLARE_USLEEP.
* scmconfig.h.in: Regenertaded.de.,.__
* stime.c (strptime): Declare this, #ifdef MISSING_STRPTIME_DECL.
(scm_localtime, scm_mktime): Use a const char * to manipulate the
time zone name.
interrupts masked, we can't use the old mechanism of delivering
signals immediately when they arrive. Signals must instead be
delivered when the asyncs run *after* the end of the critical
section in scm_internal_select. But this also means after context
switch so that the signal will be delivered to a different thread.
To avoid this, I have changed the protocol of
coop_wait_for_runnable_thread and friends so that they are allowed
to return the original thread. So, if a signal arrives during
scm_internal_select, we won't any longer be forced do a context
switch, but can remain in the same thread and deliver the signal
to it.
* iselect.c: Small fixes.
(fill_select_type): Return the highest file descriptor.
(scm_select): Tell select about the highest file descriptor. On
some systems the SELECT_SET_SIZE can be as much as 128 bytes.
Therefore the extra overhead for calculating the maximum fd seems
to be more than compensated. Is this correct? In any case,
scm_internal_select will be much faster with this info.
(scm_select, fill_select_type, set_element): Don't accept any kind
of object in the file descriptor list or vector.
coop_wait_for_runnable_thread): Disable interrupts so that no
async is executed before a potential error_revive.
(scm_internal_select): Disable interrupts during the parts of the
code which manipulate the sleep queue and the file descriptors.
