135 lines
5.4 KiB
Diff
135 lines
5.4 KiB
Diff
From 03cdaf39fa80b75c731b9d226c52a7ae04707d46 Mon Sep 17 00:00:00 2001
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From: Ariadne Conill <ariadne@dereferenced.org>
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Date: Fri, 21 Aug 2020 07:06:30 +0000
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Subject: [PATCH] ada: libgnarl compatibility for musl
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---
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gcc/ada/libgnarl/s-osinte__linux.ads | 11 ------
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gcc/ada/libgnarl/s-taprop__linux.adb | 53 ++--------------------------
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2 files changed, 3 insertions(+), 61 deletions(-)
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diff --git a/gcc/ada/libgnarl/s-osinte__linux.ads b/gcc/ada/libgnarl/s-osinte__linux.ads
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index ef449af33d1..bd7312e6686 100644
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--- a/gcc/ada/libgnarl/s-osinte__linux.ads
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+++ b/gcc/ada/libgnarl/s-osinte__linux.ads
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@@ -399,12 +399,6 @@ package System.OS_Interface is
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PTHREAD_RWLOCK_PREFER_WRITER_NP : constant := 1;
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PTHREAD_RWLOCK_PREFER_WRITER_NONRECURSIVE_NP : constant := 2;
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- function pthread_rwlockattr_setkind_np
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- (attr : access pthread_rwlockattr_t;
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- pref : int) return int;
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- pragma Import
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- (C, pthread_rwlockattr_setkind_np, "pthread_rwlockattr_setkind_np");
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-
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function pthread_rwlock_init
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(mutex : access pthread_rwlock_t;
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attr : access pthread_rwlockattr_t) return int;
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@@ -466,11 +460,6 @@ package System.OS_Interface is
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protocol : int) return int;
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pragma Import (C, pthread_mutexattr_setprotocol);
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- function pthread_mutexattr_setprioceiling
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- (attr : access pthread_mutexattr_t;
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- prioceiling : int) return int;
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- pragma Import (C, pthread_mutexattr_setprioceiling);
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-
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type struct_sched_param is record
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sched_priority : int; -- scheduling priority
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end record;
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diff --git a/gcc/ada/libgnarl/s-taprop__linux.adb b/gcc/ada/libgnarl/s-taprop__linux.adb
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index c45559e5ba0..0b0f173e7d4 100644
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--- a/gcc/ada/libgnarl/s-taprop__linux.adb
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+++ b/gcc/ada/libgnarl/s-taprop__linux.adb
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@@ -202,9 +202,6 @@ package body System.Task_Primitives.Operations is
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pragma Import
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(C, GNAT_pthread_condattr_setup, "__gnat_pthread_condattr_setup");
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- function GNAT_has_cap_sys_nice return C.int;
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- pragma Import
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- (C, GNAT_has_cap_sys_nice, "__gnat_has_cap_sys_nice");
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-- We do not have pragma Linker_Options ("-lcap"); here, because this
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-- library is not present on many Linux systems. 'libcap' is the Linux
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-- "capabilities" library, called by __gnat_has_cap_sys_nice.
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@@ -214,38 +211,6 @@ package body System.Task_Primitives.Operations is
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-- Convert Ada priority to Linux priority. Priorities are 1 .. 99 on
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-- GNU/Linux, so we map 0 .. 98 to 1 .. 99.
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- function Get_Ceiling_Support return Boolean;
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- -- Get the value of the Ceiling_Support constant (see below).
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- -- Note well: If this function or related code is modified, it should be
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- -- tested by hand, because automated testing doesn't exercise it.
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-
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- -------------------------
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- -- Get_Ceiling_Support --
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- -------------------------
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-
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- function Get_Ceiling_Support return Boolean is
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- Ceiling_Support : Boolean := False;
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- begin
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- if Locking_Policy /= 'C' then
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- return False;
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- end if;
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-
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- declare
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- function geteuid return Integer;
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- pragma Import (C, geteuid, "geteuid");
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- Superuser : constant Boolean := geteuid = 0;
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- Has_Cap : constant C.int := GNAT_has_cap_sys_nice;
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- pragma Assert (Has_Cap in 0 | 1);
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- begin
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- Ceiling_Support := Superuser or else Has_Cap = 1;
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- end;
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-
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- return Ceiling_Support;
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- end Get_Ceiling_Support;
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-
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- pragma Warnings (Off, "non-static call not allowed in preelaborated unit");
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- Ceiling_Support : constant Boolean := Get_Ceiling_Support;
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- pragma Warnings (On, "non-static call not allowed in preelaborated unit");
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-- True if the locking policy is Ceiling_Locking, and the current process
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-- has permission to use this policy. The process has permission if it is
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-- running as 'root', or if the capability was set by the setcap command,
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@@ -348,7 +313,9 @@ package body System.Task_Primitives.Operations is
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-- Init_Mutex --
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----------------
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+ pragma Warnings (Off, "formal parameter * is not referenced");
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function Init_Mutex (L : RTS_Lock_Ptr; Prio : Any_Priority) return C.int is
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+ pragma Warnings (On, "formal parameter * is not referenced");
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Mutex_Attr : aliased pthread_mutexattr_t;
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Result, Result_2 : C.int;
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@@ -360,16 +327,7 @@ package body System.Task_Primitives.Operations is
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return Result;
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end if;
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- if Ceiling_Support then
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- Result := pthread_mutexattr_setprotocol
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- (Mutex_Attr'Access, PTHREAD_PRIO_PROTECT);
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- pragma Assert (Result = 0);
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-
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- Result := pthread_mutexattr_setprioceiling
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- (Mutex_Attr'Access, Prio_To_Linux_Prio (Prio));
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- pragma Assert (Result = 0);
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-
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- elsif Locking_Policy = 'I' then
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+ if Locking_Policy = 'I' then
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Result := pthread_mutexattr_setprotocol
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(Mutex_Attr'Access, PTHREAD_PRIO_INHERIT);
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pragma Assert (Result = 0);
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@@ -409,11 +367,6 @@ package body System.Task_Primitives.Operations is
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Result := pthread_rwlockattr_init (RWlock_Attr'Access);
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pragma Assert (Result = 0);
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- Result := pthread_rwlockattr_setkind_np
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- (RWlock_Attr'Access,
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- PTHREAD_RWLOCK_PREFER_WRITER_NONRECURSIVE_NP);
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- pragma Assert (Result = 0);
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-
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Result := pthread_rwlock_init (L.RW'Access, RWlock_Attr'Access);
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pragma Assert (Result in 0 | ENOMEM);
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--
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2.31.1
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