...a signal other than SIGCHLD to its parent upon termination.) This option is ignored if __WALL is also specified. __WALL (since Linux 2.4) Wait for all children, regardless of ty…...a signal other than SIGCHLD to its parent upon termination.) This option is ignored if __WALL is also specified. __WALL (since Linux 2.4) Wait for all children, regardless of ty…...a signal other than SIGCHLD to its parent upon termination.) This option is ignored if __WALL is also specified. __WALL (since Linux 2.4) Wait for all children, regardless of ty…...e following clocks: CLOCK_REALTIME A settable system-wide clock that measures real (i.e., wall-clock) time. Setting this clock requires appropriate privileges. This clock is aff…...e following clocks: CLOCK_REALTIME A settable system-wide clock that measures real (i.e., wall-clock) time. Setting this clock requires appropriate privileges. This clock is aff…...e following clocks: CLOCK_REALTIME A settable system-wide clock that measures real (i.e., wall-clock) time. Setting this clock requires appropriate privileges. This clock is aff…...ystem-wide real-time clock. CLOCK_TAI (since Linux 3.10) A system-wide clock derived from wall-clock time but counting leap seconds. CLOCK_MONOTONIC A nonsettable, monotonically…...a different signal on timer expiration: ITIMER_REAL This timer counts down in real (i.e., wall clock) time. At each expiration, a SIGALRM signal is generated. ITIMER_VIRTUAL Thi…...a different signal on timer expiration: ITIMER_REAL This timer counts down in real (i.e., wall clock) time. At each expiration, a SIGALRM signal is generated. ITIMER_VIRTUAL Thi…...a timer against this clock. CLOCK_TAI (since Linux 3.10) A system-wide clock derived from wall-clock time but counting leap seconds. See clock_getres (2) for some further detail…process trace NAME ptrace - process trace LIBRARY Standard C library ( libc , -lc ) SYNOPSIS #include <sys/ptrace.h> long ptrace(enum __ptrace_request op , pid_t pid , void * addr …...is specified as anything other than SIGCHLD , then the parent process must specify the __WALL or __WCLONE options when waiting for the child with wait (2). If no signal (i.e., z…...is specified as anything other than SIGCHLD , then the parent process must specify the __WALL or __WCLONE options when waiting for the child with wait (2). If no signal (i.e., z…...is specified as anything other than SIGCHLD , then the parent process must specify the __WALL or __WCLONE options when waiting for the child with wait (2). If no signal (i.e., z…