alloc.h File Reference

Memory allocation wrappers that exit on failure. More...

#include <assert.h>
#include <cgraph/exit.h>
#include <cgraph/prisize_t.h>
#include <limits.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

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Functions
static void *	gv_calloc (size_t nmemb, size_t size)
static void *	gv_alloc (size_t size)
static void *	gv_realloc (void *ptr, size_t old_size, size_t new_size)
static void *	gv_recalloc (void *ptr, size_t old_nmemb, size_t new_nmemb, size_t size)
static char *	gv_strdup (const char *original)
static char *	gv_strndup (const char *original, size_t length)

Detailed Description

Much Graphviz code is not in a position to gracefully handle failure of dynamic memory allocation. The following wrappers provide a safe compromise where allocation failure does not need to be handled, but simply causes process exit. This is not ideal for external callers, but it is better than memory corruption or confusing crashes.

Note that the wrappers also take a more comprehensive strategy of zeroing newly allocated memory than malloc. This reduces the number of things callers need to think about and has only a modest overhead.

Definition in file alloc.h.

Function Documentation

gv_alloc()

static void * gv_alloc ( size_t  size )

inlinestatic

Definition at line 47 of file alloc.h.

References gv_calloc().

Referenced by addBlock(), addCase(), addChan(), addid(), addRow(), addTri(), appendFItemList(), appendFLineList(), appendSeg(), attr_list_new(), base64_encode(), circomps(), class2(), cloneGraph(), concat(), concat(), create_color_theme(), create_hierarchy(), createSGraph(), deriveGraph(), dfs(), epsf_init(), extract_adjacency(), extractHChans(), extractVChans(), fdp_init_graph(), fillMap(), find_all_cycles(), find_ints(), find_ints(), find_me(), find_share(), find_tight_subtree(), findCComp(), genEllipticPath(), getfree(), glCompButtonNew(), glCompImageNew(), glCompLabelNew(), glCompPanelNew(), glCompSetAddNewTexture(), glCompSetNew(), glNewFont(), glNewFontFromParent(), graph_init(), graphviz_tred(), gv_strndup(), gvCloneGVC(), gvconfig(), gvg_init(), gvjobs_output_filename(), gvjobs_output_langname(), gvNEWcontext(), gvplugin_install(), gvplugin_library_load(), gvusershape_open(), idopen(), init_job_viewport(), init_viewport(), initFocus(), initGrid(), initSubg(), insert(), main(), make_aux_edge(), make_graph(), make_label(), make_nitem(), makeClustObs(), makeDerivedNode(), makeObstacle(), makeTreeGen(), makeXDotSpline(), map_output_bspline(), mkAttr(), mkBlock(), mkClusters(), mkClusters(), mkDeriveNode(), mkEdge(), mkIntItem(), mkItem(), mkLabel(), mkMaze(), mkMPair(), mkNode(), mkPair(), mkPoly(), mkRouter(), mkText(), mkTree(), mkTree(), mkTreeNode(), mkTriGraph(), Multilevel_init(), Multilevel_Modularity_Clustering_init(), Multilevel_MQ_Clustering_init(), new_attr(), new_attr_ref(), new_matrix(), new_spline(), new_viewport_camera(), new_virtual_edge(), newBlock(), newIpair(), newitem(), newItem(), newItem(), node_data_new(), node_set_new(), parse_reclbl(), parseXDotFOn(), point_init(), poly_init(), push(), push_obj_state(), pushFont(), pushG(), QuadTree_new(), RTreeNewNode(), setCell(), SparseMatrix_init(), SparseStressMajorizationSmoother_new(), spring_electrical_control_new(), SpringSmoother_new(), STbuildheap(), StressMajorizationSmoother2_new(), TriangleSmoother_new(), user_init(), user_shape(), vgpane(), virtual_node(), xdot_begin_graph(), xdotBB(), xlhdxload(), and xlnew().

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gv_calloc()

static void * gv_calloc ( size_t  nmemb, size_t  size  )

inlinestatic

Definition at line 26 of file alloc.h.

References graphviz_exit(), NULL, PRISIZE_T, and SIZE_MAX.

Referenced by _spline_edges(), abomination(), addBindings(), addXLabels(), adjustGrid(), agclos(), agopen(), agxbmore(), alloc_interpolation_points(), allocArray(), allocate_ranks(), allocpoly(), appendFLineList(), arrayRects(), attach_edge_label_coordinates(), attached_clustering(), attachOrthoEdges(), attachPos(), bitarray_new(), build_skeleton(), cAdjust(), call_tri(), call_tri2(), cccomps(), ccomps(), cg(), circuitModel(), circular_init_node_edge(), cloneClusterTree(), cloneGraph(), coarsen_match(), color(), color_blend_rgb2lab(), combineCallback(), compileProg(), compute_apsp_artificial_weights_packed(), compute_apsp_dijkstra(), compute_apsp_packed(), compute_apsp_simple(), compute_densities(), compute_new_weights(), compute_weighted_apsp_packed(), computeScaleXY(), conjugate_gradient(), conjugate_gradient(), conjugate_gradient_f(), conjugate_gradient_mkernel(), construct_graph(), construct_trapezoids(), convertSPtoRoute(), copyCluster(), copyClusterInfo(), copyPts(), cpExGraph(), cpGraph(), create_color_theme(), create_hierarchy(), createSGraph(), deriveGraph(), diag_precon_new(), dijkstra(), dijkstra_f(), dijkstra_sgd(), dot_splines_(), dotneato_args_initialize(), ELinitialize(), embed_graph(), emit_begin_node(), emit_edge_graphics(), emit_map_rect(), emit_page(), expandCluster(), extract_adjacency(), fdp_init_node_edge(), feasible_tree(), fillRanks(), find_closest_pairs(), find_ints(), find_ints(), find_pair_edges(), findCComp(), findStopColor(), fixLabelOrder(), furtherest_point(), furtherest_point_in_list(), genCnt(), genPoly(), genRound(), genroute(), get_edge_label_matrix(), get_font_mapping(), get_mq(), get_or_alloc_force_qt(), get_poly_lines(), get_polygon_solids(), get_polygons(), get_tri(), getEdgeList(), getfree(), getPos(), getRankseps(), getSizes(), glCompSetAddNewTexture(), gv_alloc(), gvrender_beziercurve(), gvrender_polygon(), gvrender_polyline(), hierachical_modularity_clustering(), hierachical_mq_clustering(), ideal_distance_matrix(), Import_coord_clusters_from_dot(), Import_dot_splines(), init(), init_ex_graph(), init_graph(), init_mincross(), init_node(), initFocus(), initHeap(), initHeap(), initHeap_f(), initSEdges(), inPoly(), interpolate_coord(), layout(), layout(), layoutTree(), linGradient(), lu_decompose(), majorization(), make_barriers(), make_barriers(), make_coarse_ex_graph(), make_coarse_graph(), make_graph(), make_leafslots(), make_map_from_rectangle_groups(), make_map_internal(), makeAddPoly(), makeClustObs(), makeCompoundEdge(), makeDerivedNode(), makeDotGraph(), makeGraph(), makeGraphData(), makeInfo(), makeMatrix(), makeMultiSpline(), makeObstacle(), makePath(), makePoly(), makeSelfArcs(), makeSierpinski(), makeSimpleFlatLabels(), makeStraightEdge(), makeTetrix(), makeXDotSpline(), map_label(), map_palette_optimal_coloring(), map_point(), matinv(), maximal_independent_edge_set_heavest_edge_pernode_supernodes_first(), maxmatch(), mkCtrlPts(), mkDeriveNode(), mkDirlist(), mkMaze(), mkMazeGraph(), mkPoly(), mkQueue(), mkRouter(), mkStmts(), mkText(), mkTree(), mkTriGraph(), mkTriIndices(), monotonate_trapezoids(), move_node(), mult_dense_mat(), mult_dense_mat_d(), mult_sparse_dense_mat_transpose(), Multilevel_coarsen_internal(), Multilevel_Modularity_Clustering_establish(), Multilevel_Modularity_Clustering_init(), Multilevel_MQ_Clustering_establish(), Multilevel_MQ_Clustering_init(), multilevel_spring_electrical_embedding(), neato_init_node(), neato_layout(), new_3array(), new_array(), new_matrix(), new_spline(), newBlock(), node_data_new(), node_distinct_coloring(), node_distinct_coloring_internal2(), node_set_add(), orthoEdges(), parse_layerselect(), parse_reclbl(), parsePolyline(), parseSegs(), parseXDotFOn(), partition(), patchwork_init_node_edge(), PCA_alloc(), pccomps(), pEllipse(), Plegal_arrangement(), Plegal_arrangement(), Pobspath(), point_init(), pointsOf(), poly_gencode(), poly_init(), polyGraphs(), polyOverlap(), polyRects(), position(), positionAllItems(), power_iteration(), power_law_graph(), power_method(), Ppolybarriers(), PQgen(), PQinitialize(), prepare_topological_fisheye(), printSorted(), processTbl(), Ptriangulate(), ptVis(), putGraphs(), QuadTree_add_internal(), QuadTree_get_supernodes(), QuadTree_new(), QuadTree_new_from_point_list(), queue_new(), radGradient(), random_permutation(), readout_levels(), record_init(), Render_Contour2(), rescale_layout_polar(), rescale_layout_polarFocus(), round_corners(), rounded_draw(), routesplines_(), scAdjust(), scan_graph_mode(), scanArgs(), set_active_levels(), sgd(), shortest_path(), shortestPath(), shorting_edge_label_nodes(), simpleSplineRoute(), sizeArray(), sizeLinearArray(), smooth_vec(), smyrnaPath(), solve(), sortSites(), sparse_stress_subspace_majorization_kD(), SparseMatrix_add(), SparseMatrix_alloc(), SparseMatrix_decompose_to_supervariables(), SparseMatrix_distance_matrix(), SparseMatrix_get_augmented(), SparseMatrix_get_real_adjacency_matrix_symmetrized(), SparseMatrix_get_submatrix(), SparseMatrix_import_dot(), SparseMatrix_import_matrix_market(), SparseMatrix_init(), SparseMatrix_is_symmetric(), SparseMatrix_level_sets(), SparseMatrix_multiply_vector(), SparseMatrix_realloc(), SparseMatrix_set_entries_to_real_one(), SparseMatrix_sum_repeat_entries(), SparseMatrix_weakly_connected_components(), SparseStressMajorizationSmoother_new(), splines_intersect(), splitBSpline(), spring_electrical_embedding(), spring_electrical_embedding_fast(), spring_electrical_embedding_slow(), spring_electrical_spring_embedding(), SpringSmoother_new(), stress_majorization_kD_mkernel(), stress_model(), StressMajorizationSmoother2_new(), TB_balance(), tree_map(), TriangleSmoother_new(), triPath(), twopi_init_node_edge(), UG_graph(), undoClusterEdges(), update_tree(), user_init(), user_spline(), vc_refresh(), vector_float_take(), vector_ordering(), and write_edges().

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gv_realloc()

static void * gv_realloc ( void *  ptr, size_t  old_size, size_t  new_size  )

inlinestatic

Definition at line 49 of file alloc.h.

References free(), graphviz_exit(), NULL, and PRISIZE_T.

Referenced by addstr(), addstr(), find_me(), gv_recalloc(), readln(), storeFileName(), and storeFileName().

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gv_recalloc()

static void * gv_recalloc ( void *  ptr, size_t  old_nmemb, size_t  new_nmemb, size_t  size  )

inlinestatic

Definition at line 73 of file alloc.h.

References graphviz_exit(), gv_realloc(), PRISIZE_T, and SIZE_MAX.

Referenced by abomination(), add_camera_to_viewport(), add_cluster(), add_column(), add_graph_to_viewport(), add_point(), add_selpoly(), addEdge(), addOutputGraph(), addto(), addTriEdge(), agxbmore(), cccomps(), ccomps(), check_or_realloc_arrays(), convertSPtoRoute(), create_hierarchy(), end_component(), gdgen_polygon(), glCompSetAddNewTexture(), glCompSetAddObj(), insert(), load_mouse_actions(), make_map_internal(), make_new_cluster(), make_polyline(), make_vn_slot(), makeGraphData(), map_bspline_poly(), mkDirlist(), Multilevel_MQ_Clustering_establish(), new_spline(), newnode(), newtrap(), parseArgs(), parseXDotFOn(), pccomps(), queue_push(), SparseMatrix_import_matrix_market(), SparseMatrix_realloc(), splines_intersect(), storeline(), use_library(), and user_shape().

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gv_strdup()

static char * gv_strdup ( const char *  original )

inlinestatic

Definition at line 101 of file alloc.h.

References copy(), graphviz_exit(), NULL, and PRISIZE_T.

Referenced by addid(), agxbput_move(), appendFLineList(), beginstr(), beginstr(), buildBindings(), dotneato_args_initialize(), emit_begin_edge(), emit_colors(), emit_edge_graphics(), emit_once(), get_data_dir(), glCompLabelNew(), glCompSetAddNewTexLabel(), glNewFont(), glNewFontFromParent(), gv_fixLocale(), gvplugin_graph(), gvplugin_package_record(), initAnchor(), initMapData(), insert(), lexname(), load_attr_list(), loadGraph(), make_html_label(), make_label(), mkAttr(), new_attr_ref(), new_attr_with_ref(), on_attrAddBtn_clicked(), pango_textlayout(), parse_layers(), parse_reclbl(), parseArgs(), parseSegs(), pos_html_cell(), pos_html_tbl(), resolve(), safestrdup(), selectedLayer(), setColorScheme(), translate_postscript_fontname(), and xdotBB().

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gv_strndup()

static char * gv_strndup ( const char *  original, size_t  length  )

inlinestatic

Definition at line 114 of file alloc.h.

References copy(), graphviz_exit(), gv_alloc(), NULL, PRISIZE_T, and SIZE_MAX.

Referenced by agxbdisown(), split(), and strview_str().

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