Library import 16 (#2433)

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1 files changed, 556 insertions, 0 deletions

diff --git a/contrib/tools/python3/Modules/resource.c b/contrib/tools/python3/Modules/resource.c
new file mode 100644
index 00000000000..3c89468c48c
--- /dev/null
+++ b/contrib/tools/python3/Modules/resource.c
@@ -0,0 +1,556 @@
+
+#include "Python.h"
+#include <sys/resource.h>
+#ifdef HAVE_SYS_TIME_H
+#include <sys/time.h>
+#endif
+#include <time.h>
+#include <string.h>
+#include <errno.h>
+#include <unistd.h>
+
+/* On some systems, these aren't in any header file.
+   On others they are, with inconsistent prototypes.
+   We declare the (default) return type, to shut up gcc -Wall;
+   but we can't declare the prototype, to avoid errors
+   when the header files declare it different.
+   Worse, on some Linuxes, getpagesize() returns a size_t... */
+
+#define doubletime(TV) ((double)(TV).tv_sec + (TV).tv_usec * 0.000001)
+
+/*[clinic input]
+module resource
+[clinic start generated code]*/
+/*[clinic end generated code: output=da39a3ee5e6b4b0d input=e89d38ed52609d7c]*/
+
+/*[python input]
+class pid_t_converter(CConverter):
+    type = 'pid_t'
+    format_unit = '" _Py_PARSE_PID "'
+
+    def parse_arg(self, argname, displayname):
+        return """
+            {paramname} = PyLong_AsPid({argname});
+            if ({paramname} == -1 && PyErr_Occurred()) {{{{
+                goto exit;
+            }}}}
+            """.format(argname=argname, paramname=self.parser_name)
+[python start generated code]*/
+/*[python end generated code: output=da39a3ee5e6b4b0d input=5af1c116d56cbb5a]*/
+
+#include "clinic/resource.c.h"
+
+PyDoc_STRVAR(struct_rusage__doc__,
+"struct_rusage: Result from getrusage.\n\n"
+"This object may be accessed either as a tuple of\n"
+"    (utime,stime,maxrss,ixrss,idrss,isrss,minflt,majflt,\n"
+"    nswap,inblock,oublock,msgsnd,msgrcv,nsignals,nvcsw,nivcsw)\n"
+"or via the attributes ru_utime, ru_stime, ru_maxrss, and so on.");
+
+static PyStructSequence_Field struct_rusage_fields[] = {
+    {"ru_utime",        "user time used"},
+    {"ru_stime",        "system time used"},
+    {"ru_maxrss",       "max. resident set size"},
+    {"ru_ixrss",        "shared memory size"},
+    {"ru_idrss",        "unshared data size"},
+    {"ru_isrss",        "unshared stack size"},
+    {"ru_minflt",       "page faults not requiring I/O"},
+    {"ru_majflt",       "page faults requiring I/O"},
+    {"ru_nswap",        "number of swap outs"},
+    {"ru_inblock",      "block input operations"},
+    {"ru_oublock",      "block output operations"},
+    {"ru_msgsnd",       "IPC messages sent"},
+    {"ru_msgrcv",       "IPC messages received"},
+    {"ru_nsignals",     "signals received"},
+    {"ru_nvcsw",        "voluntary context switches"},
+    {"ru_nivcsw",       "involuntary context switches"},
+    {0}
+};
+
+static PyStructSequence_Desc struct_rusage_desc = {
+    "resource.struct_rusage",           /* name */
+    struct_rusage__doc__,       /* doc */
+    struct_rusage_fields,       /* fields */
+    16          /* n_in_sequence */
+};
+
+typedef struct {
+  PyTypeObject *StructRUsageType;
+} resourcemodulestate;
+
+
+static inline resourcemodulestate*
+get_resource_state(PyObject *module)
+{
+    void *state = PyModule_GetState(module);
+    assert(state != NULL);
+    return (resourcemodulestate *)state;
+}
+
+static struct PyModuleDef resourcemodule;
+
+#ifdef HAVE_GETRUSAGE
+/*[clinic input]
+resource.getrusage
+
+    who: int
+    /
+
+[clinic start generated code]*/
+
+static PyObject *
+resource_getrusage_impl(PyObject *module, int who)
+/*[clinic end generated code: output=8fad2880ba6a9843 input=5c857bcc5b9ccb1b]*/
+{
+    struct rusage ru;
+    PyObject *result;
+
+    if (getrusage(who, &ru) == -1) {
+        if (errno == EINVAL) {
+            PyErr_SetString(PyExc_ValueError,
+                            "invalid who parameter");
+            return NULL;
+        }
+        PyErr_SetFromErrno(PyExc_OSError);
+        return NULL;
+    }
+
+    result = PyStructSequence_New(
+        get_resource_state(module)->StructRUsageType);
+    if (!result)
+        return NULL;
+
+    PyStructSequence_SET_ITEM(result, 0,
+                    PyFloat_FromDouble(doubletime(ru.ru_utime)));
+    PyStructSequence_SET_ITEM(result, 1,
+                    PyFloat_FromDouble(doubletime(ru.ru_stime)));
+    PyStructSequence_SET_ITEM(result, 2, PyLong_FromLong(ru.ru_maxrss));
+    PyStructSequence_SET_ITEM(result, 3, PyLong_FromLong(ru.ru_ixrss));
+    PyStructSequence_SET_ITEM(result, 4, PyLong_FromLong(ru.ru_idrss));
+    PyStructSequence_SET_ITEM(result, 5, PyLong_FromLong(ru.ru_isrss));
+    PyStructSequence_SET_ITEM(result, 6, PyLong_FromLong(ru.ru_minflt));
+    PyStructSequence_SET_ITEM(result, 7, PyLong_FromLong(ru.ru_majflt));
+    PyStructSequence_SET_ITEM(result, 8, PyLong_FromLong(ru.ru_nswap));
+    PyStructSequence_SET_ITEM(result, 9, PyLong_FromLong(ru.ru_inblock));
+    PyStructSequence_SET_ITEM(result, 10, PyLong_FromLong(ru.ru_oublock));
+    PyStructSequence_SET_ITEM(result, 11, PyLong_FromLong(ru.ru_msgsnd));
+    PyStructSequence_SET_ITEM(result, 12, PyLong_FromLong(ru.ru_msgrcv));
+    PyStructSequence_SET_ITEM(result, 13, PyLong_FromLong(ru.ru_nsignals));
+    PyStructSequence_SET_ITEM(result, 14, PyLong_FromLong(ru.ru_nvcsw));
+    PyStructSequence_SET_ITEM(result, 15, PyLong_FromLong(ru.ru_nivcsw));
+
+    if (PyErr_Occurred()) {
+        Py_DECREF(result);
+        return NULL;
+    }
+
+    return result;
+}
+#endif
+
+static int
+py2rlimit(PyObject *limits, struct rlimit *rl_out)
+{
+    PyObject *curobj, *maxobj;
+    limits = PySequence_Tuple(limits);
+    if (!limits)
+        /* Here limits is a borrowed reference */
+        return -1;
+
+    if (PyTuple_GET_SIZE(limits) != 2) {
+        PyErr_SetString(PyExc_ValueError,
+                        "expected a tuple of 2 integers");
+        goto error;
+    }
+    curobj = PyTuple_GET_ITEM(limits, 0);
+    maxobj = PyTuple_GET_ITEM(limits, 1);
+#if !defined(HAVE_LARGEFILE_SUPPORT)
+    rl_out->rlim_cur = PyLong_AsLong(curobj);
+    if (rl_out->rlim_cur == (rlim_t)-1 && PyErr_Occurred())
+        goto error;
+    rl_out->rlim_max = PyLong_AsLong(maxobj);
+    if (rl_out->rlim_max == (rlim_t)-1 && PyErr_Occurred())
+        goto error;
+#else
+    /* The limits are probably bigger than a long */
+    rl_out->rlim_cur = PyLong_AsLongLong(curobj);
+    if (rl_out->rlim_cur == (rlim_t)-1 && PyErr_Occurred())
+        goto error;
+    rl_out->rlim_max = PyLong_AsLongLong(maxobj);
+    if (rl_out->rlim_max == (rlim_t)-1 && PyErr_Occurred())
+        goto error;
+#endif
+
+    Py_DECREF(limits);
+    rl_out->rlim_cur = rl_out->rlim_cur & RLIM_INFINITY;
+    rl_out->rlim_max = rl_out->rlim_max & RLIM_INFINITY;
+    return 0;
+
+error:
+    Py_DECREF(limits);
+    return -1;
+}
+
+static PyObject*
+rlimit2py(struct rlimit rl)
+{
+    if (sizeof(rl.rlim_cur) > sizeof(long)) {
+        return Py_BuildValue("LL",
+                             (long long) rl.rlim_cur,
+                             (long long) rl.rlim_max);
+    }
+    return Py_BuildValue("ll", (long) rl.rlim_cur, (long) rl.rlim_max);
+}
+
+/*[clinic input]
+resource.getrlimit
+
+    resource: int
+    /
+
+[clinic start generated code]*/
+
+static PyObject *
+resource_getrlimit_impl(PyObject *module, int resource)
+/*[clinic end generated code: output=98327b25061ffe39 input=a697cb0004cb3c36]*/
+{
+    struct rlimit rl;
+
+    if (resource < 0 || resource >= RLIM_NLIMITS) {
+        PyErr_SetString(PyExc_ValueError,
+                        "invalid resource specified");
+        return NULL;
+    }
+
+    if (getrlimit(resource, &rl) == -1) {
+        PyErr_SetFromErrno(PyExc_OSError);
+        return NULL;
+    }
+    return rlimit2py(rl);
+}
+
+/*[clinic input]
+resource.setrlimit
+
+    resource: int
+    limits: object
+    /
+
+[clinic start generated code]*/
+
+static PyObject *
+resource_setrlimit_impl(PyObject *module, int resource, PyObject *limits)
+/*[clinic end generated code: output=4e82ec3f34d013d1 input=6235a6ce23b4ca75]*/
+{
+    struct rlimit rl;
+
+    if (resource < 0 || resource >= RLIM_NLIMITS) {
+        PyErr_SetString(PyExc_ValueError,
+                        "invalid resource specified");
+        return NULL;
+    }
+
+    if (PySys_Audit("resource.setrlimit", "iO", resource,
+                    limits ? limits : Py_None) < 0) {
+        return NULL;
+    }
+
+    if (py2rlimit(limits, &rl) < 0) {
+        return NULL;
+    }
+
+    if (setrlimit(resource, &rl) == -1) {
+        if (errno == EINVAL)
+            PyErr_SetString(PyExc_ValueError,
+                            "current limit exceeds maximum limit");
+        else if (errno == EPERM)
+            PyErr_SetString(PyExc_ValueError,
+                            "not allowed to raise maximum limit");
+        else
+            PyErr_SetFromErrno(PyExc_OSError);
+        return NULL;
+    }
+    Py_RETURN_NONE;
+}
+
+#ifdef HAVE_PRLIMIT
+/*[clinic input]
+resource.prlimit
+
+    pid: pid_t
+    resource: int
+    limits: object = None
+    /
+
+[clinic start generated code]*/
+
+static PyObject *
+resource_prlimit_impl(PyObject *module, pid_t pid, int resource,
+                      PyObject *limits)
+/*[clinic end generated code: output=6ebc49ff8c3a816e input=54bb69c9585e33bf]*/
+{
+    struct rlimit old_limit, new_limit;
+    int retval;
+
+    if (resource < 0 || resource >= RLIM_NLIMITS) {
+        PyErr_SetString(PyExc_ValueError,
+                        "invalid resource specified");
+        return NULL;
+    }
+
+    if (PySys_Audit("resource.prlimit", "iiO", pid, resource,
+                    limits ? limits : Py_None) < 0) {
+        return NULL;
+    }
+
+    if (limits != Py_None) {
+        if (py2rlimit(limits, &new_limit) < 0) {
+            return NULL;
+        }
+        retval = prlimit(pid, resource, &new_limit, &old_limit);
+    }
+    else {
+        retval = prlimit(pid, resource, NULL, &old_limit);
+    }
+
+    if (retval == -1) {
+        if (errno == EINVAL) {
+            PyErr_SetString(PyExc_ValueError,
+                            "current limit exceeds maximum limit");
+        } else {
+            PyErr_SetFromErrno(PyExc_OSError);
+        }
+        return NULL;
+    }
+    return rlimit2py(old_limit);
+}
+#endif /* HAVE_PRLIMIT */
+
+/*[clinic input]
+resource.getpagesize -> int
+[clinic start generated code]*/
+
+static int
+resource_getpagesize_impl(PyObject *module)
+/*[clinic end generated code: output=9ba93eb0f3d6c3a9 input=546545e8c1f42085]*/
+{
+    long pagesize = 0;
+#if defined(HAVE_GETPAGESIZE)
+    pagesize = getpagesize();
+#elif defined(HAVE_SYSCONF) && defined(_SC_PAGE_SIZE)
+    pagesize = sysconf(_SC_PAGE_SIZE);
+#else
+#   error "unsupported platform: resource.getpagesize()"
+#endif
+    return pagesize;
+}
+
+/* List of functions */
+
+static struct PyMethodDef
+resource_methods[] = {
+    RESOURCE_GETRUSAGE_METHODDEF
+    RESOURCE_GETRLIMIT_METHODDEF
+    RESOURCE_PRLIMIT_METHODDEF
+    RESOURCE_SETRLIMIT_METHODDEF
+    RESOURCE_GETPAGESIZE_METHODDEF
+    {NULL, NULL}                             /* sentinel */
+};
+
+
+/* Module initialization */
+
+static int
+resource_exec(PyObject *module)
+{
+    resourcemodulestate *state = get_resource_state(module);
+#define ADD_INT(module, value)                                    \
+    do {                                                          \
+        if (PyModule_AddIntConstant(module, #value, value) < 0) { \
+            return -1;                                            \
+        }                                                         \
+    } while (0)
+
+    /* Add some symbolic constants to the module */
+    Py_INCREF(PyExc_OSError);
+    if (PyModule_AddObject(module, "error", PyExc_OSError) < 0) {
+        Py_DECREF(PyExc_OSError);
+        return -1;
+    }
+
+    state->StructRUsageType = PyStructSequence_NewType(&struct_rusage_desc);
+    if (state->StructRUsageType == NULL) {
+        return -1;
+    }
+    if (PyModule_AddType(module, state->StructRUsageType) < 0) {
+        return -1;
+    }
+
+    /* insert constants */
+#ifdef RLIMIT_CPU
+    ADD_INT(module, RLIMIT_CPU);
+#endif
+
+#ifdef RLIMIT_FSIZE
+    ADD_INT(module, RLIMIT_FSIZE);
+#endif
+
+#ifdef RLIMIT_DATA
+    ADD_INT(module, RLIMIT_DATA);
+#endif
+
+#ifdef RLIMIT_STACK
+    ADD_INT(module, RLIMIT_STACK);
+#endif
+
+#ifdef RLIMIT_CORE
+    ADD_INT(module, RLIMIT_CORE);
+#endif
+
+#ifdef RLIMIT_NOFILE
+    ADD_INT(module, RLIMIT_NOFILE);
+#endif
+
+#ifdef RLIMIT_OFILE
+    ADD_INT(module, RLIMIT_OFILE);
+#endif
+
+#ifdef RLIMIT_VMEM
+    ADD_INT(module, RLIMIT_VMEM);
+#endif
+
+#ifdef RLIMIT_AS
+    ADD_INT(module, RLIMIT_AS);
+#endif
+
+#ifdef RLIMIT_RSS
+    ADD_INT(module, RLIMIT_RSS);
+#endif
+
+#ifdef RLIMIT_NPROC
+    ADD_INT(module, RLIMIT_NPROC);
+#endif
+
+#ifdef RLIMIT_MEMLOCK
+    ADD_INT(module, RLIMIT_MEMLOCK);
+#endif
+
+#ifdef RLIMIT_SBSIZE
+    ADD_INT(module, RLIMIT_SBSIZE);
+#endif
+
+/* Linux specific */
+#ifdef RLIMIT_MSGQUEUE
+    ADD_INT(module, RLIMIT_MSGQUEUE);
+#endif
+
+#ifdef RLIMIT_NICE
+    ADD_INT(module, RLIMIT_NICE);
+#endif
+
+#ifdef RLIMIT_RTPRIO
+    ADD_INT(module, RLIMIT_RTPRIO);
+#endif
+
+#ifdef RLIMIT_RTTIME
+    ADD_INT(module, RLIMIT_RTTIME);
+#endif
+
+#ifdef RLIMIT_SIGPENDING
+    ADD_INT(module, RLIMIT_SIGPENDING);
+#endif
+
+/* target */
+#ifdef RUSAGE_SELF
+    ADD_INT(module, RUSAGE_SELF);
+#endif
+
+#ifdef RUSAGE_CHILDREN
+    ADD_INT(module, RUSAGE_CHILDREN);
+#endif
+
+#ifdef RUSAGE_BOTH
+    ADD_INT(module, RUSAGE_BOTH);
+#endif
+
+#ifdef RUSAGE_THREAD
+    ADD_INT(module, RUSAGE_THREAD);
+#endif
+
+/* FreeBSD specific */
+
+#ifdef RLIMIT_SWAP
+    ADD_INT(module, RLIMIT_SWAP);
+#endif
+
+#ifdef RLIMIT_SBSIZE
+    ADD_INT(module, RLIMIT_SBSIZE);
+#endif
+
+#ifdef RLIMIT_NPTS
+    ADD_INT(module, RLIMIT_NPTS);
+#endif
+
+#ifdef RLIMIT_KQUEUES
+    ADD_INT(module, RLIMIT_KQUEUES);
+#endif
+
+    PyObject *v;
+    if (sizeof(RLIM_INFINITY) > sizeof(long)) {
+        v = PyLong_FromLongLong((long long) RLIM_INFINITY);
+    } else
+    {
+        v = PyLong_FromLong((long) RLIM_INFINITY);
+    }
+    if (!v) {
+        return -1;
+    }
+
+    if (PyModule_AddObject(module, "RLIM_INFINITY", v) < 0) {
+        Py_DECREF(v);
+        return -1;
+    }
+    return 0;
+
+#undef ADD_INT
+}
+
+static struct PyModuleDef_Slot resource_slots[] = {
+    {Py_mod_exec, resource_exec},
+    {Py_mod_multiple_interpreters, Py_MOD_PER_INTERPRETER_GIL_SUPPORTED},
+    {0, NULL}
+};
+
+static int
+resourcemodule_traverse(PyObject *m, visitproc visit, void *arg) {
+    Py_VISIT(get_resource_state(m)->StructRUsageType);
+    return 0;
+}
+
+static int
+resourcemodule_clear(PyObject *m) {
+    Py_CLEAR(get_resource_state(m)->StructRUsageType);
+    return 0;
+}
+
+static void
+resourcemodule_free(void *m) {
+    resourcemodule_clear((PyObject *)m);
+}
+
+static struct PyModuleDef resourcemodule = {
+    PyModuleDef_HEAD_INIT,
+    .m_name = "resource",
+    .m_size = sizeof(resourcemodulestate),
+    .m_methods = resource_methods,
+    .m_slots = resource_slots,
+    .m_traverse = resourcemodule_traverse,
+    .m_clear = resourcemodule_clear,
+    .m_free = resourcemodule_free,
+};
+
+PyMODINIT_FUNC
+PyInit_resource(void)
+{
+    return PyModuleDef_Init(&resourcemodule);
+}