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scsh-0.6
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+ Don't raise an error on ECHILD since ECHILD just indicates that 

there are no childs ready.

+ Squirrel away errno before starting alarm interrupts
This commit is contained in:
mainzelm 2002-02-06 09:47:27 +00:00
parent da9c6ba9b5
commit 7acad294ac
1 changed files with 7 additions and 5 deletions
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8
scsh/syscalls1.c
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@ -71,10 +71,12 @@ s48_value wait_pid(s48_value s48_pid, s48_value s48_flags)
result_pid = waitpid(pid, &status, flags); result_pid = waitpid(pid, &status, flags);
if (result_pid == -1) if (result_pid == -1)
s48_raise_os_error_2 (errno, s48_pid, s48_flags); if (errno == ECHILD) sch_result_pid = s48_enter_fixnum (0);
else s48_raise_os_error_2 (errno, s48_pid, s48_flags);
else {
sch_result_pid = s48_enter_integer (result_pid); sch_result_pid = s48_enter_integer (result_pid);
sch_status = s48_enter_integer (status); sch_status = s48_enter_integer (status);
}
sch_status_list = s48_cons (sch_status, S48_NULL); sch_status_list = s48_cons (sch_status, S48_NULL);
sch_retval = s48_cons (sch_result_pid, sch_status_list); sch_retval = s48_cons (sch_result_pid, sch_status_list);
@ -124,8 +126,8 @@ s48_value scheme_exec(s48_value prog, s48_value argv, s48_value env)
} }
s48_stop_alarm_interrupts(); s48_stop_alarm_interrupts();
execve(s48_extract_string (prog), unix_argv, unix_env); /* Do it. */ execve(s48_extract_string (prog), unix_argv, unix_env); /* Do it. */
s48_start_alarm_interrupts();
e = errno; e = errno;
s48_start_alarm_interrupts();
if( env != S48_TRUE ) { if( env != S48_TRUE ) {
Free(unix_env); Free(unix_env);
} }