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libc: Use Hamstraaja for malloc on EalánOS.

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This commit is contained in:
Michael Mueller
2025-10-17 16:54:42 +02:00
parent 1dd70b3e3e
commit 9943716d9b
5 changed files with 28 additions and 11 deletions
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2
repos/libports/lib/mk/libc-common.inc
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@@ -7,6 +7,7 @@
LIBC_PORT_DIR := $(call select_from_ports,libc)
LIBC_DIR := $(LIBC_PORT_DIR)/src/lib/libc
LIBC_REP_DIR := $(realpath $(call select_from_repositories,include/libc-genode)/../..)
EALAN_REP_DIR := $(realpath $(call select_from_repositories,ealanos))
# local libc includes
INC_DIR += $(LIBC_DIR)/lib/libc/locale
@@ -14,6 +15,7 @@ INC_DIR += $(LIBC_DIR)/lib/libc/include
INC_DIR += $(LIBC_DIR)/lib/libc/stdio
INC_DIR += $(LIBC_DIR)/lib/libc/net
INC_DIR += $(LIBC_DIR)/contrib/gdtoa
INC_DIR += $(EALAN_REP_DIR)/include
#CC_OPT += -DGENODE_RELEASE

4
repos/libports/src/lib/libc/internal/init.h
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@@ -15,6 +15,8 @@
#define _LIBC__INTERNAL__INIT_H_
/* Genode includes */
#include "pd_session/pd_session.h"
#include "region_map/region_map.h"
#include <base/env.h>
#include <base/heap.h>
#include <util/xml_node.h>
@@ -98,7 +100,7 @@ namespace Libc {
/**
* Malloc allocator
*/
void init_malloc(Genode::Allocator &);
void init_malloc(Genode::Pd_session &pd , Genode::Region_map &rm);
void init_malloc_cloned(Clone_connection &);
void reinit_malloc(Genode::Allocator &);

1
repos/libports/src/lib/libc/internal/kernel.h
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@@ -45,6 +45,7 @@
#include <internal/atexit.h>
#include <internal/rtc.h>
namespace Libc {
class Kernel;
class Main_blockade;

2
repos/libports/src/lib/libc/kernel.cc
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@@ -500,7 +500,7 @@ Libc::Kernel::Kernel(Genode::Env &env, Genode::Allocator &heap)
} else {
_malloc_heap.construct(*_malloc_ram, _env.rm());
init_malloc(*_malloc_heap);
init_malloc(_env.pd(), _env.rm());
}
init_fork(_env, _fd_alloc, _libc_env, _heap, *_malloc_heap, _pid, *this,

30
repos/libports/src/lib/libc/malloc.cc
View File

@@ -13,6 +13,8 @@
*/
/* Genode includes */
#include "pd_session/pd_session.h"
#include "region_map/region_map.h"
#include <base/env.h>
#include <base/log.h>
#include <base/slab.h>
@@ -30,6 +32,7 @@ extern "C" {
#include <internal/init.h>
#include <internal/clone_session.h>
#include <internal/errno.h>
#include <ealanos/memory/hamstraaja.h>
namespace Libc {
@@ -83,7 +86,7 @@ class Libc::Malloc
SLAB_START = 5, /* 32 bytes (log2) */
SLAB_STOP = 11, /* 2048 bytes (log2) */
NUM_SLABS = (SLAB_STOP - SLAB_START) + 1,
DEFAULT_ALIGN = 16
DEFAULT_ALIGN = 64
};
struct Metadata
@@ -232,10 +235,11 @@ class Libc::Malloc
using namespace Libc;
using Hamsterer = Ealan::Memory::Hamstraaja<32, 2048>;
//static Malloc *mallocator;
static Malloc *mallocator;
static Hamsterer *mallocator;
extern "C" void *malloc(size_t size)
{
@@ -267,13 +271,21 @@ extern "C" void *realloc(void *ptr, size_t size)
return nullptr;
}
return mallocator->realloc(ptr, size);
void *new_addr = mallocator->alloc(size);
if (new_addr) {
::memcpy(new_addr, ptr, size);
free(ptr);
}
return new_addr;
//return mallocator->realloc(ptr, size);
}
int posix_memalign(void **memptr, size_t alignment, size_t size)
{
*memptr = mallocator->alloc(size, alignment);
*memptr = mallocator->aligned_alloc(size, alignment);
if (!*memptr)
return Errno(ENOMEM);
@@ -283,19 +295,19 @@ int posix_memalign(void **memptr, size_t alignment, size_t size)
/* space for singleton object w/o destructor */
static long _malloc_obj[(sizeof(Malloc) + sizeof(long))/sizeof(long)];
static long _malloc_obj[(sizeof(Hamsterer) + sizeof(long))/sizeof(long)];
void Libc::init_malloc(Genode::Allocator &heap)
void Libc::init_malloc(Genode::Pd_session &pd, Genode::Region_map &rm)
{
mallocator = construct_at<Malloc>(_malloc_obj, heap);
mallocator = construct_at<Hamsterer>(_malloc_obj, pd, rm);
}
void Libc::init_malloc_cloned(Clone_connection &clone_connection)
{
clone_connection.object_content(_malloc_obj);
mallocator = (Malloc *)_malloc_obj;
mallocator = (Hamsterer *)_malloc_obj;
}