diff options
Diffstat (limited to 'erts/emulator/test/nif_SUITE_data/nif_SUITE.c')
-rw-r--r-- | erts/emulator/test/nif_SUITE_data/nif_SUITE.c | 190 |
1 files changed, 188 insertions, 2 deletions
diff --git a/erts/emulator/test/nif_SUITE_data/nif_SUITE.c b/erts/emulator/test/nif_SUITE_data/nif_SUITE.c index 2c93891852..a4915b13c4 100644 --- a/erts/emulator/test/nif_SUITE_data/nif_SUITE.c +++ b/erts/emulator/test/nif_SUITE_data/nif_SUITE.c @@ -25,6 +25,8 @@ #include <limits.h> #ifndef __WIN32__ #include <unistd.h> +#include <fcntl.h> +#include <errno.h> #endif #include "nif_mod.h" @@ -42,7 +44,9 @@ static ERL_NIF_TERM atom_second; static ERL_NIF_TERM atom_millisecond; static ERL_NIF_TERM atom_microsecond; static ERL_NIF_TERM atom_nanosecond; - +static ERL_NIF_TERM atom_eagain; +static ERL_NIF_TERM atom_eof; +static ERL_NIF_TERM atom_error; typedef struct { @@ -102,6 +106,18 @@ struct binary_resource { unsigned size; }; +static ErlNifResourceType* fd_resource_type; +static void fd_resource_dtor(ErlNifEnv* env, void* obj); +static void fd_resource_stop(ErlNifEnv* env, void* obj); +static ErlNifResourceTypeInit fd_rt_init = { + fd_resource_dtor, + fd_resource_stop +}; +struct fd_resource { + int fd; +}; + + static int get_pointer(ErlNifEnv* env, ERL_NIF_TERM term, void** pp) { ErlNifBinary bin; @@ -144,6 +160,9 @@ static int load(ErlNifEnv* env, void** priv_data, ERL_NIF_TERM load_info) msgenv_resource_type = enif_open_resource_type(env,NULL,"nif_SUITE.msgenv", msgenv_dtor, ERL_NIF_RT_CREATE, NULL); + fd_resource_type = enif_open_resource_type_x(env, "nif_SUITE.fd", + &fd_rt_init, + ERL_NIF_RT_CREATE, NULL); atom_false = enif_make_atom(env,"false"); atom_true = enif_make_atom(env,"true"); atom_self = enif_make_atom(env,"self"); @@ -154,6 +173,9 @@ static int load(ErlNifEnv* env, void** priv_data, ERL_NIF_TERM load_info) atom_millisecond = enif_make_atom(env,"millisecond"); atom_microsecond = enif_make_atom(env,"microsecond"); atom_nanosecond = enif_make_atom(env,"nanosecond"); + atom_eagain = enif_make_atom(env, "eagain"); + atom_eof = enif_make_atom(env, "eof"); + atom_error = enif_make_atom(env, "error"); *priv_data = data; return 0; @@ -2010,6 +2032,165 @@ static ERL_NIF_TERM format_term(ErlNifEnv* env, int argc, const ERL_NIF_TERM arg } +static int get_fd(ErlNifEnv* env, ERL_NIF_TERM term, ErlNifEvent* fd) +{ + struct fd_resource* rsrc; + + if (!enif_get_resource(env, term, fd_resource_type, (void**)&rsrc)) { + return 0; + } + *fd = rsrc->fd; + return 1; +} + +static ERL_NIF_TERM select_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]) +{ + ErlNifEvent e; + enum ErlNifSelectFlags mode; + void* obj; + ERL_NIF_TERM ref; + int retval; + + if (!get_fd(env, argv[0], &e) + || !enif_get_uint(env, argv[1], &mode) + || !enif_get_resource(env, argv[2], fd_resource_type, &obj)) + { + return enif_make_badarg(env); + } + + ref = argv[3]; + + retval = enif_select(env, e, mode, obj, ref); + + return enif_make_int(env, retval); +} + +static ERL_NIF_TERM pipe_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]) +{ + struct fd_resource* read_rsrc; + struct fd_resource* write_rsrc; + ERL_NIF_TERM read_fd, write_fd; + unsigned char *inp, *outp; + int fds[2], flags; + + if (pipe(fds) < 0) + return enif_make_string(env, "pipe failed", ERL_NIF_LATIN1); + + if ((flags = fcntl(fds[0], F_GETFL, 0)) < 0 + || fcntl(fds[0], F_SETFL, flags|O_NONBLOCK) < 0 + || (flags = fcntl(fds[1], F_GETFL, 0)) < 0 + || fcntl(fds[1], F_SETFL, flags|O_NONBLOCK) < 0) { + close(fds[0]); + close(fds[1]); + return enif_make_string(env, "fcntl failed on pipe", ERL_NIF_LATIN1); + } + + read_rsrc = enif_alloc_resource(fd_resource_type, sizeof(struct fd_resource)); + write_rsrc = enif_alloc_resource(fd_resource_type, sizeof(struct fd_resource)); + read_rsrc->fd = fds[0]; + write_rsrc->fd = fds[1]; + read_fd = enif_make_resource(env, read_rsrc); + write_fd = enif_make_resource(env, write_rsrc); + enif_release_resource(read_rsrc); + enif_release_resource(write_rsrc); + + return enif_make_tuple2(env, read_fd, write_fd); +} + +static ERL_NIF_TERM write_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]) +{ + ErlNifEvent fd; + ErlNifBinary bin; + int n, written = 0; + + if (!get_fd(env, argv[0], &fd) + || !enif_inspect_binary(env, argv[1], &bin)) + return enif_make_badarg(env); + + for (;;) { + n = write(fd, bin.data + written, bin.size - written); + if (n >= 0) { + written += n; + if (written == bin.size) { + return atom_ok; + } + } + else if (errno == EAGAIN) { + return enif_make_tuple2(env, atom_eagain, enif_make_int(env, written)); + } + else if (errno == EINTR) { + continue; + } + else { + return enif_make_tuple2(env, atom_error, enif_make_int(env, errno)); + } + } +} + +static ERL_NIF_TERM read_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]) +{ + ErlNifEvent fd; + unsigned char* buf; + int n, count, nread = 0; + ERL_NIF_TERM res; + + if (!get_fd(env, argv[0], &fd) + || !enif_get_int(env, argv[1], &count) || count < 1) + return enif_make_badarg(env); + + buf = enif_make_new_binary(env, count, &res); + + for (;;) { + n = read(fd, buf, count); + if (n > 0) { + if (n < count) { + res = enif_make_sub_binary(env, res, 0, n); + } + return res; + } + else if (n == 0) { + return atom_eof; + } + else if (errno == EAGAIN) { + return atom_eagain; + } + else if (errno == EINTR) { + continue; + } + else { + return enif_make_tuple2(env, atom_error, enif_make_int(env, errno)); + } + } +} + +static ERL_NIF_TERM is_closed_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]) +{ + ErlNifEvent fd; + + if (!get_fd(env, argv[0], &fd)) + return enif_make_badarg(env); + + return fd < 0 ? atom_true : atom_false; +} + +static void fd_resource_dtor(ErlNifEnv* env, void* obj) +{ + struct fd_resource* rsrc = (struct fd_resource*)obj; + if (rsrc->fd >= 0) + close(rsrc->fd); +} + +static void fd_resource_stop(ErlNifEnv* env, void* obj) +{ + struct fd_resource* rsrc = (struct fd_resource*)obj; + if (rsrc->fd >= 0) { + close(rsrc->fd); + rsrc->fd = -1; /* thread safety ? */ + } +} + + + static ErlNifFunc nif_funcs[] = { {"lib_version", 0, lib_version}, @@ -2086,7 +2267,12 @@ static ErlNifFunc nif_funcs[] = {"term_to_binary_nif", 2, term_to_binary}, {"binary_to_term_nif", 3, binary_to_term}, {"port_command_nif", 2, port_command}, - {"format_term_nif", 2, format_term} + {"format_term_nif", 2, format_term}, + {"select_nif", 4, select_nif}, + {"pipe_nif", 0, pipe_nif}, + {"write_nif", 2, write_nif}, + {"read_nif", 2, read_nif}, + {"is_closed_nif", 1, is_closed_nif} }; ERL_NIF_INIT(nif_SUITE,nif_funcs,load,NULL,upgrade,unload) |