Setup cmake project

2022-12-07 16:40:43 +01:00
parent db2816a092
commit f304e7f239
138 changed files with 28939 additions and 0 deletions
--- a/src/kernel/memory/BumpAllocator.cc
+++ b/src/kernel/memory/BumpAllocator.cc
@ -0,0 +1,76 @@
+/*****************************************************************************
+ *                                                                           *
+ *                        B U M P A L L O C A T O R                          *
+ *                                                                           *
+ *---------------------------------------------------------------------------*
+ * Beschreibung:    Eine sehr einfache Heap-Verwaltung, welche freigegebenen *
+ *                  Speicher nicht mehr nutzen kann.                         *
+ *                                                                           *
+ * Autor:           Michael Schoettner, HHU, 3.3.2022                        *
+ *****************************************************************************/
+
+#include "BumpAllocator.h"
+#include "kernel/system/Globals.h"
+
+/*****************************************************************************
+ * Methode:         BumpAllocator::init                                      *
+ *---------------------------------------------------------------------------*
+ * Beschreibung:    BumpAllokartor intitialisieren.                          *
+ *****************************************************************************/
+void BumpAllocator::init() {
+
+    /* Hier muess Code eingefuegt werden */
+
+    allocations = 0;
+    next = reinterpret_cast<unsigned char*>(heap_start);
+
+    log.info() << "Initialized Bump Allocator" << endl;
+}
+
+/*****************************************************************************
+ * Methode:         BumpAllocator::dump_free_memory                          *
+ *---------------------------------------------------------------------------*
+ * Beschreibung:    Ausgabe der Freispeicherinfos. Zu Debuggingzwecken.      *
+ *****************************************************************************/
+void BumpAllocator::dump_free_memory() {
+
+    /* Hier muess Code eingefuegt werden */
+
+    kout << "Freier Speicher:" << endl
+         << " - Next: " << hex << reinterpret_cast<unsigned int>(next)
+         << ", Allocations: " << dec << allocations << endl;
+}
+
+/*****************************************************************************
+ * Methode:         BumpAllocator::alloc                                     *
+ *---------------------------------------------------------------------------*
+ * Beschreibung:    Einen neuen Speicherblock allozieren.                    * 
+ *****************************************************************************/
+void* BumpAllocator::alloc(unsigned int req_size) {
+
+    /* Hier muess Code eingefuegt werden */
+
+    log.debug() << "Requested " << hex << req_size << " Bytes" << endl;
+
+    if (req_size + reinterpret_cast<unsigned int>(next) > heap_end) {
+        log.error() << " - More memory requested than available :(" << endl;
+        return nullptr;
+    }
+
+    void* allocated = next;
+    next = reinterpret_cast<unsigned char*>(reinterpret_cast<unsigned int>(next) + req_size);
+    allocations = allocations + 1;
+
+    log.trace() << " - Allocated " << hex << req_size << " Bytes." << endl;
+
+    return allocated;
+}
+
+/*****************************************************************************
+ * Methode:         BumpAllocator::free                                      *
+ *---------------------------------------------------------------------------*
+ * Beschreibung:    Nicht implementiert.                                     *
+ *****************************************************************************/
+void BumpAllocator::free(void* ptr) {
+    log.error() << "   mm_free: ptr= " << hex << reinterpret_cast<unsigned int>(ptr) << ", not supported" << endl;
+}