Changeset b4aa1ab for libcfa

Timestamp:

Dec 13, 2020, 10:10:15 PM (4 years ago)

Author:

Peter A. Buhr <pabuhr@…>

Branches:

ADT, arm-eh, ast-experimental, enum, forall-pointer-decay, jacob/cs343-translation, master, new-ast-unique-expr, pthread-emulation, qualifiedEnum

Children:

55885dd

Parents:

4803a901

Message:

fix running nested routines on stacks in the heap

File:

• libcfa/src/heap.cfa (modified) (5 diffs)

libcfa/src/heap.cfa

@@ -10 +10 @@
 // Created On       : Tue Dec 19 21:58:35 2017
 // Last Modified By : Peter A. Buhr
-// Last Modified On : Fri Dec 11 07:36:34 2020
-// Update Count     : 970
+// Last Modified On : Sun Dec 13 22:04:10 2020
+// Update Count     : 984
 //
 
@@ -490 +490 @@
                 // If the size requested is bigger than the current remaining storage, increase the size of the heap.
 
-                size_t increase = ceiling2( size > heapExpand ? size : heapExpand, libAlign() );
+                size_t increase = ceiling2( size > heapExpand ? size : heapExpand, pageSize );
                 if ( sbrk( increase ) == (void *)-1 ) {                 // failed, no memory ?
                         unlock( extlock );
                         abort( NO_MEMORY_MSG, size );                           // give up
+                } // if
+                if ( mprotect( (char *)heapEnd + heapRemaining, increase, PROT_READ | PROT_WRITE | PROT_EXEC ) ) {
+                        enum { BufferSize = 128 };
+                        char helpText[BufferSize];
+                        // Do not call strerror( errno ) as it may call malloc.
+                        int len = snprintf( helpText, BufferSize, "internal error, extend(), mprotect failure, heapEnd:%p size:%zd, errno:%d.", heapEnd, increase, errno );
+                        __cfaabi_bits_write( STDERR_FILENO, helpText, len );
                 } // if
                 #ifdef __STATISTICS__
@@ -568 +575 @@
                 #endif // __STATISTICS__
 
-                block = (HeapManager.Storage *)mmap( 0, tsize, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, mmapFd, 0 );
+                block = (HeapManager.Storage *)mmap( 0, tsize, PROT_READ | PROT_WRITE | PROT_EXEC, MAP_PRIVATE | MAP_ANONYMOUS, mmapFd, 0 );
                 if ( block == (HeapManager.Storage *)MAP_FAILED ) { // failed ?
                         if ( errno == ENOMEM ) abort( NO_MEMORY_MSG, tsize ); // no memory
                         // Do not call strerror( errno ) as it may call malloc.
-                        abort( "(HeapManager &)0x%p.doMalloc() : internal error, mmap failure, size:%zu error:%d.", &heapManager, tsize, errno );
+                        abort( "(HeapManager &)0x%p.doMalloc() : internal error, mmap failure, size:%zu errno:%d.", &heapManager, tsize, errno );
                 } //if
                 #ifdef __CFA_DEBUG__
@@ -669 +676 @@
                 for ( HeapManager.Storage * p = freeLists[i].freeList; p != 0p; p = p->header.kind.real.next ) {
                 #else
-                // for ( HeapManager.Storage * p = top( freeLists[i].freeList ); p != 0p; p = (p)`next->top ) {
+                        for(;;) {
+//              for ( HeapManager.Storage * p = top( freeLists[i].freeList ); p != 0p; p = (p)`next->top ) {
 //              for ( HeapManager.Storage * p = top( freeLists[i].freeList ); p != 0p; /* p = getNext( p )->top */) {
-                for ( HeapManager.Storage * p ;; /* p = getNext( p )->top */) {
-                        HeapManager.Storage * temp = p->header.kind.real.next.top; // FIX ME: direct assignent fails, initialization works`
+//                      HeapManager.Storage * temp = p->header.kind.real.next.top; // FIX ME: direct assignent fails, initialization works`
 //                      typeof(p) temp = (( p )`next)->top;                     // FIX ME: direct assignent fails, initialization works`
 //                      p = temp;
@@ -716 +723 @@
 
         char * end = (char *)sbrk( 0 );
-        heapBegin = heapEnd = sbrk( (char *)ceiling2( (long unsigned int)end, libAlign() ) - end ); // move start of heap to multiple of alignment
+        heapBegin = heapEnd = sbrk( (char *)ceiling2( (long unsigned int)end, pageSize ) - end ); // move start of heap to multiple of alignment
 } // HeapManager