cpython/Modules/resource.c

// Need limited C API version 3.13 for PySys_Audit()
#include "pyconfig.h"   // Py_GIL_DISABLED
#ifndef Py_GIL_DISABLED
#define Py_LIMITED_API …
#endif

#include "Python.h"
#include <errno.h>                // errno
#include <string.h>
#include <sys/resource.h>         // getrusage()
#include <unistd.h>               // getpagesize()

/* 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) …

/*[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, *, limited_capi):
        return self.format_code("""
            {paramname} = PyLong_AsPid({argname});
            if ({paramname} == -1 && PyErr_Occurred()) {{{{
                goto exit;
            }}}}
            """,
            argname=argname)
[python start generated code]*/
/*[python end generated code: output=da39a3ee5e6b4b0d input=c94349aa1aad151d]*/

#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[] = …;

static PyStructSequence_Desc struct_rusage_desc = …;

resourcemodulestate;


static inline resourcemodulestate*
get_resource_state(PyObject *module)
{ … }

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]*/
{ … }
#endif

static int
py2rlimit(PyObject *limits, struct rlimit *rl_out)
{ … }

static PyObject*
rlimit2py(struct rlimit rl)
{ … }

/*[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]*/
{ … }

/*[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]*/
{ … }

#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]*/
{ … }
#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]*/
{ … }

/* List of functions */

static struct PyMethodDef
resource_methods[] = …;


/* Module initialization */

static int
resource_exec(PyObject *module)
{ … }

static struct PyModuleDef_Slot resource_slots[] = …;

static int
resourcemodule_traverse(PyObject *m, visitproc visit, void *arg) { … }

static int
resourcemodule_clear(PyObject *m) { … }

static void
resourcemodule_free(void *m) { … }

static struct PyModuleDef resourcemodule = …;

PyMODINIT_FUNC
PyInit_resource(void)
{ … }