Diffstat (limited to 'noncore/apps/opie-console/procctl.cpp') (more/less context) (show whitespace changes)
-rw-r--r-- | noncore/apps/opie-console/procctl.cpp | 90 |
1 files changed, 90 insertions, 0 deletions
diff --git a/noncore/apps/opie-console/procctl.cpp b/noncore/apps/opie-console/procctl.cpp new file mode 100644 index 0000000..6839a84 --- a/dev/null +++ b/noncore/apps/opie-console/procctl.cpp @@ -0,0 +1,90 @@ +#include <sys/wait.h> + +#include <fcntl.h> +#include <unistd.h> + +#include "procctl.h" + +ProcContainer *ProcCtl::m_last = 0; + +ProcCtl::ProcCtl() { + signal( SIGCHLD, signal_handler ); +} +ProcCtl::~ProcCtl() { +} +void ProcCtl::add(pid_t pi, int fd ) { + ProcContainer * con = new ProcContainer; + //memset(con, 0, sizeof(con) ); + con->pid = pi; + con->fd = fd; + con->status = 0; + con->prev = m_last; + + m_last = con; + +} +void ProcCtl::remove( pid_t pi ) { + /* + * We first check if the last item + * is equal to pi the we + * + */ + ProcContainer* con; + if (m_last->pid == pi ) { + con = m_last; + m_last = con->prev; + delete con; + return; + } + + con = m_last; + ProcContainer* forw = 0l; + while (con ) { + /* remove it */ + if ( pi == con->pid ) { + forw->prev = con->prev; + delete con; + return; + } + + forw = con; + con = con->prev; + } + +} +void ProcCtl::remove( ProcContainer con ) { + remove( con.pid ); +} +int ProcCtl::status(pid_t pid )const{ + ProcContainer *con = m_last; + while (con) { + if (con->pid == pid ) + return con->status; + con = con->prev; + } + return -1; +} +void ProcCtl::signal_handler(int) { + int status; + signal( SIGCHLD, signal_handler ); + pid_t pi = waitpid( -1, &status, WNOHANG ); + + /* + * find the container for pid + * + */ + if ( pi < 0 ) { + return; + } + + ProcContainer* con = m_last; + while (con) { + if ( con->pid == pi ) { + con->status = status; + char result = 1; + /* give a 'signal' */ + ::write(con->fd, &result, 1 ); + } + con = con->prev; + } +} |