remove signal related APIs

snapshot_preview2 dropped the signal related APIs. This means
removing __wasi_proc_raise() and __wasi_signal_t, which is
what this commit does.

Refs: #59

README.md

@@ -225,7 +225,6 @@ This section has been adapted from the official WASI API documentation.
 - [`uvwasi_path_unlink_file()`](#path_unlink_file)
 - [`uvwasi_poll_oneoff()`](#poll_oneoff)
 - [`uvwasi_proc_exit()`](#proc_exit)
-- [`uvwasi_proc_raise()`](#proc_raise)
 - [`uvwasi_random_get()`](#random_get)
 - [`uvwasi_sched_yield()`](#sched_yield)
 - [`uvwasi_sock_recv()`](#sock_recv)
@@ -1062,18 +1061,6 @@ Inputs:
 
 Does not return.
 
-### <a href="#proc_raise" name="proc_raise"></a>`uvwasi_proc_raise()`
-
-Send a signal to the process of the calling thread.
-
-Note: This is similar to `raise` in POSIX.
-
-Inputs:
-
-- <a href="#proc_raise.sig" name="proc_raise.sig"></a><code>[\_\_wasi\_signal\_t](#signal) <strong>sig</strong></code>
-
-    The signal condition to trigger.
-
 ### <a href="#random_get" name="random_get"></a>`uvwasi_random_get()`
 
 Write high-quality random data into a buffer.
@@ -2168,170 +2155,6 @@ defined, it must be set to zero.
 
 Used by [`uvwasi_sock_send()`](#sock_send).
 
-### <a href="#signal" name="signal"></a>`uvwasi_signal_t` (`uint8_t`)
-
-Signal condition.
-
-Used by [`uvwasi_proc_raise()`](#proc_raise).
-
-Possible values:
-
-- <a href="#signal.abrt" name="signal.abrt"></a>**`UVWASI_SIGABRT`**
-
-    Process abort signal.
-
-    Action: Terminates the process.
-
-- <a href="#signal.alrm" name="signal.alrm"></a>**`UVWASI_SIGALRM`**
-
-    Alarm clock.
-
-    Action: Terminates the process.
-
-- <a href="#signal.bus" name="signal.bus"></a>**`UVWASI_SIGBUS`**
-
-    Access to an undefined portion of a memory object.
-
-    Action: Terminates the process.
-
-- <a href="#signal.chld" name="signal.chld"></a>**`UVWASI_SIGCHLD`**
-
-    Child process terminated, stopped, or continued.
-
-    Action: Ignored.
-
-- <a href="#signal.cont" name="signal.cont"></a>**`UVWASI_SIGCONT`**
-
-    Continue executing, if stopped.
-
-    Action: Continues executing, if stopped.
-
-- <a href="#signal.fpe" name="signal.fpe"></a>**`UVWASI_SIGFPE`**
-
-    Erroneous arithmetic operation.
-
-    Action: Terminates the process.
-
-- <a href="#signal.hup" name="signal.hup"></a>**`UVWASI_SIGHUP`**
-
-    Hangup.
-
-    Action: Terminates the process.
-
-- <a href="#signal.ill" name="signal.ill"></a>**`UVWASI_SIGILL`**
-
-    Illegal instruction.
-
-    Action: Terminates the process.
-
-- <a href="#signal.int" name="signal.int"></a>**`UVWASI_SIGINT`**
-
-    Terminate interrupt signal.
-
-    Action: Terminates the process.
-
-- <a href="#signal.kill" name="signal.kill"></a>**`UVWASI_SIGKILL`**
-
-    Kill.
-
-    Action: Terminates the process.
-
-- <a href="#signal.pipe" name="signal.pipe"></a>**`UVWASI_SIGPIPE`**
-
-    Write on a pipe with no one to read it.
-
-    Action: Ignored.
-
-- <a href="#signal.quit" name="signal.quit"></a>**`UVWASI_SIGQUIT`**
-
-    Terminal quit signal.
-
-    Action: Terminates the process.
-
-- <a href="#signal.segv" name="signal.segv"></a>**`UVWASI_SIGSEGV`**
-
-    Invalid memory reference.
-
-    Action: Terminates the process.
-
-- <a href="#signal.stop" name="signal.stop"></a>**`UVWASI_SIGSTOP`**
-
-    Stop executing.
-
-    Action: Stops executing.
-
-- <a href="#signal.sys" name="signal.sys"></a>**`UVWASI_SIGSYS`**
-
-    Bad system call.
-
-    Action: Terminates the process.
-
-- <a href="#signal.term" name="signal.term"></a>**`UVWASI_SIGTERM`**
-
-    Termination signal.
-
-    Action: Terminates the process.
-
-- <a href="#signal.trap" name="signal.trap"></a>**`UVWASI_SIGTRAP`**
-
-    Trace/breakpoint trap.
-
-    Action: Terminates the process.
-
-- <a href="#signal.tstp" name="signal.tstp"></a>**`UVWASI_SIGTSTP`**
-
-    Terminal stop signal.
-
-    Action: Stops executing.
-
-- <a href="#signal.ttin" name="signal.ttin"></a>**`UVWASI_SIGTTIN`**
-
-    Background process attempting read.
-
-    Action: Stops executing.
-
-- <a href="#signal.ttou" name="signal.ttou"></a>**`UVWASI_SIGTTOU`**
-
-    Background process attempting write.
-
-    Action: Stops executing.
-
-- <a href="#signal.urg" name="signal.urg"></a>**`UVWASI_SIGURG`**
-
-    High bandwidth data is available at a socket.
-
-    Action: Ignored.
-
-- <a href="#signal.usr1" name="signal.usr1"></a>**`UVWASI_SIGUSR1`**
-
-    User-defined signal 1.
-
-    Action: Terminates the process.
-
-- <a href="#signal.usr2" name="signal.usr2"></a>**`UVWASI_SIGUSR2`**
-
-    User-defined signal 2.
-
-    Action: Terminates the process.
-
-- <a href="#signal.vtalrm" name="signal.vtalrm"></a>**`UVWASI_SIGVTALRM`**
-
-    Virtual timer expired.
-
-    Action: Terminates the process.
-
-- <a href="#signal.xcpu" name="signal.xcpu"></a>**`UVWASI_SIGXCPU`**
-
-    CPU time limit exceeded.
-
-    Action: Terminates the process.
-
-- <a href="#signal.xfsz" name="signal.xfsz"></a>**`UVWASI_SIGXFSZ`**
-
-    File size limit exceeded.
-
-    Action: Terminates the process.
-
 ### <a href="#subclockflags" name="subclockflags"></a>`uvwasi_subclockflags_t` (`uint16_t` bitfield)
 
 Flags determining how to interpret the timestamp provided in

include/uvwasi.h

@@ -240,7 +240,6 @@ uvwasi_errno_t uvwasi_poll_oneoff(uvwasi_t* uvwasi,
                                   size_t nsubscriptions,
                                   size_t* nevents);
 uvwasi_errno_t uvwasi_proc_exit(uvwasi_t* uvwasi, uvwasi_exitcode_t rval);
-uvwasi_errno_t uvwasi_proc_raise(uvwasi_t* uvwasi, uvwasi_signal_t sig);
 uvwasi_errno_t uvwasi_random_get(uvwasi_t* uvwasi, void* buf, size_t buf_len);
 uvwasi_errno_t uvwasi_sched_yield(uvwasi_t* uvwasi);
 uvwasi_errno_t uvwasi_sock_recv(uvwasi_t* uvwasi,

include/wasi_types.h

@@ -222,38 +222,6 @@ typedef uint8_t uvwasi_sdflags_t;                /* Bitfield */
 
 typedef uint16_t uvwasi_siflags_t;               /* Bitfield */
 
-typedef uint8_t uvwasi_signal_t;
-#define UVWASI_SIGHUP     1
-#define UVWASI_SIGINT     2
-#define UVWASI_SIGQUIT    3
-#define UVWASI_SIGILL     4
-#define UVWASI_SIGTRAP    5
-#define UVWASI_SIGABRT    6
-#define UVWASI_SIGBUS     7
-#define UVWASI_SIGFPE     8
-#define UVWASI_SIGKILL    9
-#define UVWASI_SIGUSR1   10
-#define UVWASI_SIGSEGV   11
-#define UVWASI_SIGUSR2   12
-#define UVWASI_SIGPIPE   13
-#define UVWASI_SIGALRM   14
-#define UVWASI_SIGTERM   15
-#define UVWASI_SIGCHLD   16
-#define UVWASI_SIGCONT   17
-#define UVWASI_SIGSTOP   18
-#define UVWASI_SIGTSTP   19
-#define UVWASI_SIGTTIN   20
-#define UVWASI_SIGTTOU   21
-#define UVWASI_SIGURG    22
-#define UVWASI_SIGXCPU   23
-#define UVWASI_SIGXFSZ   24
-#define UVWASI_SIGVTALRM 25
-#define UVWASI_SIGPROF   26
-#define UVWASI_SIGWINCH  27
-#define UVWASI_SIGPOLL   28
-#define UVWASI_SIGPWR    29
-#define UVWASI_SIGSYS    30
-
 typedef uint16_t uvwasi_subclockflags_t;         /* Bitfield */
 #define UVWASI_SUBSCRIPTION_CLOCK_ABSTIME (1 << 0)
 

src/uv_mapping.c

@@ -104,91 +104,6 @@ uvwasi_errno_t uvwasi__translate_uv_error(int err) {
 }
 
 
-int uvwasi__translate_to_uv_signal(uvwasi_signal_t sig) {
-  switch (sig) {
-#ifdef SIGABRT
-    case UVWASI_SIGABRT:   return SIGABRT;
-#endif
-#ifdef SIGALRM
-    case UVWASI_SIGALRM:   return SIGALRM;
-#endif
-#ifdef SIGBUS
-    case UVWASI_SIGBUS:    return SIGBUS;
-#endif
-#ifdef SIGCHLD
-    case UVWASI_SIGCHLD:   return SIGCHLD;
-#endif
-#ifdef SIGCONT
-    case UVWASI_SIGCONT:   return SIGCONT;
-#endif
-#ifdef SIGFPE
-    case UVWASI_SIGFPE:    return SIGFPE;
-#endif
-#ifdef SIGHUP
-    case UVWASI_SIGHUP:    return SIGHUP;
-#endif
-#ifdef SIGILL
-    case UVWASI_SIGILL:    return SIGILL;
-#endif
-#ifdef SIGINT
-    case UVWASI_SIGINT:    return SIGINT;
-#endif
-#ifdef SIGKILL
-    case UVWASI_SIGKILL:   return SIGKILL;
-#endif
-#ifdef SIGPIPE
-    case UVWASI_SIGPIPE:   return SIGPIPE;
-#endif
-#ifdef SIGQUIT
-    case UVWASI_SIGQUIT:   return SIGQUIT;
-#endif
-#ifdef SIGSEGV
-    case UVWASI_SIGSEGV:   return SIGSEGV;
-#endif
-#ifdef SIGSTOP
-    case UVWASI_SIGSTOP:   return SIGSTOP;
-#endif
-#ifdef SIGSYS
-    case UVWASI_SIGSYS:    return SIGSYS;
-#endif
-#ifdef SIGTERM
-    case UVWASI_SIGTERM:   return SIGTERM;
-#endif
-#ifdef SIGTRAP
-    case UVWASI_SIGTRAP:   return SIGTRAP;
-#endif
-#ifdef SIGTSTP
-    case UVWASI_SIGTSTP:   return SIGTSTP;
-#endif
-#ifdef SIGTTIN
-    case UVWASI_SIGTTIN:   return SIGTTIN;
-#endif
-#ifdef SIGTTOU
-    case UVWASI_SIGTTOU:   return SIGTTOU;
-#endif
-#ifdef SIGURG
-    case UVWASI_SIGURG:    return SIGURG;
-#endif
-#ifdef SIGUSR1
-    case UVWASI_SIGUSR1:   return SIGUSR1;
-#endif
-#ifdef SIGUSR2
-    case UVWASI_SIGUSR2:   return SIGUSR2;
-#endif
-#ifdef SIGVTALRM
-    case UVWASI_SIGVTALRM: return SIGVTALRM;
-#endif
-#ifdef SIGXCPU
-    case UVWASI_SIGXCPU:   return SIGXCPU;
-#endif
-#ifdef SIGXFSZ
-    case UVWASI_SIGXFSZ:   return SIGXFSZ;
-#endif
-    default:               return -1;
-  }
-}
-
-
 uvwasi_timestamp_t uvwasi__timespec_to_timestamp(const uv_timespec_t* ts) {
   /* TODO(cjihrig): Handle overflow. */
   return (uvwasi_timestamp_t) ts->tv_sec * NANOS_PER_SEC + ts->tv_nsec;

src/uv_mapping.h

@@ -7,7 +7,6 @@
 #define NANOS_PER_SEC 1000000000
 
 uvwasi_errno_t uvwasi__translate_uv_error(int err);
-int uvwasi__translate_to_uv_signal(uvwasi_signal_t sig);
 uvwasi_timestamp_t uvwasi__timespec_to_timestamp(const uv_timespec_t* ts);
 uvwasi_filetype_t uvwasi__stat_to_filetype(const uv_stat_t* stat);
 void uvwasi__stat_to_filestat(const uv_stat_t* stat, uvwasi_filestat_t* fs);

src/uvwasi.c

@@ -2262,24 +2262,6 @@ uvwasi_errno_t uvwasi_proc_exit(uvwasi_t* uvwasi, uvwasi_exitcode_t rval) {
 }
 
 
-uvwasi_errno_t uvwasi_proc_raise(uvwasi_t* uvwasi, uvwasi_signal_t sig) {
-  int r;
-
-  if (uvwasi == NULL)
-    return UVWASI_EINVAL;
-
-  r = uvwasi__translate_to_uv_signal(sig);
-  if (r == -1)
-    return UVWASI_ENOSYS;
-
-  r = uv_kill(uv_os_getpid(), r);
-  if (r != 0)
-    return uvwasi__translate_uv_error(r);
-
-  return UVWASI_ESUCCESS;
-}
-
-
 uvwasi_errno_t uvwasi_random_get(uvwasi_t* uvwasi, void* buf, size_t buf_len) {
   int r;
 

test/test-einval-input-validation.c

@@ -153,8 +153,6 @@ int main(void) {
   CHECK(uvwasi_poll_oneoff(&uvw, &test_sub, &test_event, 0, &test_size));
   CHECK(uvwasi_poll_oneoff(&uvw, &test_sub, &test_event, 5, NULL));
 
-  CHECK(uvwasi_proc_raise(NULL, UVWASI_SIGUSR2));
-
   CHECK(uvwasi_random_get(NULL, test_void, 10));
   CHECK(uvwasi_random_get(&uvw, NULL, 10));