some new features

.venv/lib/python3.12/site-packages/Cython/Includes/posix/resource.pxd

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+# https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/sys_resource.h.html
+# https://man7.org/linux/man-pages/man2/getrusage.2.html
+
+from posix.time  cimport timeval
+from posix.types cimport id_t
+
+cdef extern from "<sys/resource.h>" nogil:
+
+    enum: PRIO_PROCESS
+    enum: PRIO_PGRP
+    enum: PRIO_USER
+
+    enum: RLIM_INFINITY
+    enum: RLIM_SAVED_MAX
+    enum: RLIM_SAVED_CUR
+
+    enum: RUSAGE_SELF
+    enum: RUSAGE_CHILDREN
+
+    enum: RLIMIT_CORE
+    enum: RLIMIT_CPU
+    enum: RLIMIT_DATA
+    enum: RLIMIT_FSIZE
+    enum: RLIMIT_NOFILE
+    enum: RLIMIT_STACK
+    enum: RLIMIT_AS
+
+    ctypedef unsigned long rlim_t
+
+    cdef struct rlimit:
+        rlim_t rlim_cur
+        rlim_t rlim_max
+
+    cdef struct rusage:
+        timeval ru_utime
+        timeval ru_stime
+        # Linux-specific
+        long    ru_maxrss
+        long    ru_ixrss
+        long    ru_idrss
+        long    ru_isrss
+        long    ru_minflt
+        long    ru_majflt
+        long    ru_nswap
+        long    ru_inblock
+        long    ru_oublock
+        long    ru_msgsnd
+        long    ru_msgrcv
+        long    ru_nsignals
+        long    ru_nvcsw
+        long    ru_nivcsw
+
+    int  getpriority(int, id_t)
+    int  getrlimit(int, rlimit *)
+    int  getrusage(int, rusage *)
+    int  setpriority(int, id_t, int)
+    int  setrlimit(int, const rlimit *)