aboutsummaryrefslogtreecommitdiffstats
path: root/erts
diff options
context:
space:
mode:
Diffstat (limited to 'erts')
-rw-r--r--erts/emulator/Makefile.in3
-rw-r--r--erts/emulator/beam/beam_bif_load.c24
-rw-r--r--erts/emulator/beam/beam_load.c167
-rw-r--r--erts/emulator/beam/beam_load.h27
-rw-r--r--erts/emulator/beam/beam_ranges.c205
-rw-r--r--erts/emulator/beam/erl_alloc.c4
-rw-r--r--erts/emulator/beam/global.h8
7 files changed, 243 insertions, 195 deletions
diff --git a/erts/emulator/Makefile.in b/erts/emulator/Makefile.in
index 2bd7297231..dad09383cf 100644
--- a/erts/emulator/Makefile.in
+++ b/erts/emulator/Makefile.in
@@ -704,7 +704,8 @@ EMU_OBJS = \
$(OBJDIR)/beam_emu.o $(OBJDIR)/beam_opcodes.o \
$(OBJDIR)/beam_load.o $(OBJDIR)/beam_bif_load.o \
$(OBJDIR)/beam_debug.o $(OBJDIR)/beam_bp.o \
- $(OBJDIR)/beam_catches.o
+ $(OBJDIR)/beam_catches.o \
+ $(OBJDIR)/beam_ranges.o
RUN_OBJS = \
$(OBJDIR)/erl_pbifs.o $(OBJDIR)/benchmark.o \
diff --git a/erts/emulator/beam/beam_bif_load.c b/erts/emulator/beam/beam_bif_load.c
index 7b17790d3a..8fe11746ee 100644
--- a/erts/emulator/beam/beam_bif_load.c
+++ b/erts/emulator/beam/beam_bif_load.c
@@ -44,7 +44,6 @@ static void decrement_refc(BeamInstr* code);
static int is_native(BeamInstr* code);
static int any_heap_ref_ptrs(Eterm* start, Eterm* end, char* mod_start, Uint mod_size);
static int any_heap_refs(Eterm* start, Eterm* end, char* mod_start, Uint mod_size);
-static void remove_from_address_table(BeamInstr* code);
Eterm
load_module_2(BIF_ALIST_2)
@@ -449,7 +448,7 @@ BIF_RETTYPE finish_after_on_load_2(BIF_ALIST_2)
modp->curr.code = NULL;
modp->curr.code_length = 0;
modp->curr.catches = BEAM_CATCHES_NIL;
- remove_from_address_table(code);
+ erts_remove_from_ranges(code);
}
erts_smp_thr_progress_unblock();
erts_smp_proc_lock(BIF_P, ERTS_PROC_LOCK_MAIN);
@@ -754,7 +753,7 @@ purge_module(int module)
modp->old.code = NULL;
modp->old.code_length = 0;
modp->old.catches = BEAM_CATCHES_NIL;
- remove_from_address_table(code);
+ erts_remove_from_ranges(code);
ret = 0;
}
erts_rwunlock_old_code(code_ix);
@@ -780,25 +779,6 @@ decrement_refc(BeamInstr* code)
}
}
-static void
-remove_from_address_table(BeamInstr* code)
-{
- int i;
-
- for (i = 0; i < num_loaded_modules; i++) {
- if (modules[i].start == code) {
- num_loaded_modules--;
- while (i < num_loaded_modules) {
- modules[i] = modules[i+1];
- i++;
- }
- mid_module = &modules[num_loaded_modules/2];
- return;
- }
- }
- ASSERT(0); /* Not found? */
-}
-
/*
* Move code from current to old.
diff --git a/erts/emulator/beam/beam_load.c b/erts/emulator/beam/beam_load.c
index fc3e395e91..873b94d175 100644
--- a/erts/emulator/beam/beam_load.c
+++ b/erts/emulator/beam/beam_load.c
@@ -352,27 +352,6 @@ typedef struct LoaderState {
int loc_size; /* Size of location info in bytes (2/4) */
} LoaderState;
-/*
- * Layout of the line table.
- */
-
-#define MI_LINE_FNAME_PTR 0
-#define MI_LINE_LOC_TAB 1
-#define MI_LINE_LOC_SIZE 2
-#define MI_LINE_FUNC_TAB 3
-
-#define LINE_INVALID_LOCATION (0)
-
-/*
- * Macros for manipulating locations.
- */
-
-#define IS_VALID_LOCATION(File, Line) \
- ((unsigned) (File) < 255 && (unsigned) (Line) < ((1 << 24) - 1))
-#define MAKE_LOCATION(File, Line) (((File) << 24) | (Line))
-#define LOC_FILE(Loc) ((Loc) >> 24)
-#define LOC_LINE(Loc) ((Loc) & ((1 << 24)-1))
-
#define GetTagAndValue(Stp, Tag, Val) \
do { \
BeamInstr __w; \
@@ -549,22 +528,9 @@ static Eterm native_addresses(Process* p, Eterm mod);
int patch_funentries(Eterm Patchlist);
int patch(Eterm Addresses, Uint fe);
static int safe_mul(UWord a, UWord b, UWord* resp);
-static void lookup_loc(FunctionInfo* fi, BeamInstr* pc,
- BeamInstr* modp, int idx);
-
static int must_swap_floats;
-/*
- * The following variables keep a sorted list of address ranges for
- * each module. It allows us to quickly find a function given an
- * instruction pointer.
- */
-Range* modules = NULL; /* Sorted lists of module addresses. */
-int num_loaded_modules; /* Number of loaded modules. */
-int allocated_modules; /* Number of slots allocated. */
-Range* mid_module = NULL; /* Cached search start point */
-
Uint erts_total_code_size;
/**********************************************************************/
@@ -580,11 +546,7 @@ void init_load(void)
f.fd = 1.0;
must_swap_floats = (f.fw[0] == 0);
- allocated_modules = 128;
- modules = (Range *) erts_alloc(ERTS_ALC_T_MODULE_REFS,
- allocated_modules*sizeof(Range));
- mid_module = modules;
- num_loaded_modules = 0;
+ erts_init_ranges();
}
static void
@@ -955,7 +917,6 @@ insert_new_code(Process *c_p, ErtsProcLocks c_p_locks,
{
Module* modp;
Eterm retval;
- int i;
if ((retval = beam_make_current_old(c_p, c_p_locks, module)) != NIL) {
erts_dsprintf_buf_t *dsbufp = erts_create_logger_dsbuf();
@@ -977,25 +938,10 @@ insert_new_code(Process *c_p, ErtsProcLocks c_p_locks,
modp->curr.catches = BEAM_CATCHES_NIL; /* Will be filled in later. */
/*
- * Update address table (used for finding a function from a PC value).
+ * Update ranges (used for finding a function from a PC value).
*/
- if (num_loaded_modules == allocated_modules) {
- allocated_modules *= 2;
- modules = (Range *) erts_realloc(ERTS_ALC_T_MODULE_REFS,
- (void *) modules,
- allocated_modules * sizeof(Range));
- }
- for (i = num_loaded_modules; i > 0; i--) {
- if (code > modules[i-1].start) {
- break;
- }
- modules[i] = modules[i-1];
- }
- modules[i].start = code;
- modules[i].end = (BeamInstr *) (((byte *)code) + size);
- num_loaded_modules++;
- mid_module = &modules[num_loaded_modules/2];
+ erts_update_ranges(code, size);
return NIL;
}
@@ -5306,113 +5252,6 @@ compilation_info_for_module(Process* p, /* Process whose heap to use. */
}
/*
- * Find a function from the given pc and fill information in
- * the FunctionInfo struct. If the full_info is non-zero, fill
- * in all available information (including location in the
- * source code). If no function is found, the 'current' field
- * will be set to NULL.
- */
-
-void
-erts_lookup_function_info(FunctionInfo* fi, BeamInstr* pc, int full_info)
-{
- Range* low = modules;
- Range* high = low + num_loaded_modules;
- Range* mid = mid_module;
-
- fi->current = NULL;
- fi->needed = 5;
- fi->loc = LINE_INVALID_LOCATION;
- while (low < high) {
- if (pc < mid->start) {
- high = mid;
- } else if (pc > mid->end) {
- low = mid + 1;
- } else {
- BeamInstr** low1 = (BeamInstr **) (mid->start + MI_FUNCTIONS);
- BeamInstr** high1 = low1 + mid->start[MI_NUM_FUNCTIONS];
- BeamInstr** mid1;
-
- while (low1 < high1) {
- mid1 = low1 + (high1-low1) / 2;
- if (pc < mid1[0]) {
- high1 = mid1;
- } else if (pc < mid1[1]) {
- mid_module = mid;
- fi->current = mid1[0]+2;
- if (full_info) {
- BeamInstr** fp = (BeamInstr **) (mid->start +
- MI_FUNCTIONS);
- int idx = mid1 - fp;
- lookup_loc(fi, pc, mid->start, idx);
- }
- return;
- } else {
- low1 = mid1 + 1;
- }
- }
- return;
- }
- mid = low + (high-low) / 2;
- }
-}
-
-static void
-lookup_loc(FunctionInfo* fi, BeamInstr* orig_pc, BeamInstr* modp, int idx)
-{
- Eterm* line = (Eterm *) modp[MI_LINE_TABLE];
- Eterm* low;
- Eterm* high;
- Eterm* mid;
- Eterm pc;
-
- if (line == 0) {
- return;
- }
-
- pc = (Eterm) (BeamInstr) orig_pc;
- fi->fname_ptr = (Eterm *) (BeamInstr) line[MI_LINE_FNAME_PTR];
- low = (Eterm *) (BeamInstr) line[MI_LINE_FUNC_TAB+idx];
- high = (Eterm *) (BeamInstr) line[MI_LINE_FUNC_TAB+idx+1];
- while (high > low) {
- mid = low + (high-low) / 2;
- if (pc < mid[0]) {
- high = mid;
- } else if (pc < mid[1]) {
- int file;
- int index = mid - (Eterm *) (BeamInstr) line[MI_LINE_FUNC_TAB];
-
- if (line[MI_LINE_LOC_SIZE] == 2) {
- Uint16* loc_table =
- (Uint16 *) (BeamInstr) line[MI_LINE_LOC_TAB];
- fi->loc = loc_table[index];
- } else {
- Uint32* loc_table =
- (Uint32 *) (BeamInstr) line[MI_LINE_LOC_TAB];
- ASSERT(line[MI_LINE_LOC_SIZE] == 4);
- fi->loc = loc_table[index];
- }
- if (fi->loc == LINE_INVALID_LOCATION) {
- return;
- }
- fi->needed += 3+2+3+2;
- file = LOC_FILE(fi->loc);
- if (file == 0) {
- /* Special case: Module name with ".erl" appended */
- Atom* mod_atom = atom_tab(atom_val(fi->current[0]));
- fi->needed += 2*(mod_atom->len+4);
- } else {
- Atom* ap = atom_tab(atom_val((fi->fname_ptr)[file-1]));
- fi->needed += 2*ap->len;
- }
- return;
- } else {
- low = mid + 1;
- }
- }
-}
-
-/*
* Build a single {M,F,A,Loction} item to be part of
* a stack trace.
*/
diff --git a/erts/emulator/beam/beam_load.h b/erts/emulator/beam/beam_load.h
index 997ba197db..9da692625b 100644
--- a/erts/emulator/beam/beam_load.h
+++ b/erts/emulator/beam/beam_load.h
@@ -61,11 +61,6 @@ typedef struct {
* instruction pointer.
*/
-extern Range* modules;
-extern int num_loaded_modules;
-extern int allocated_modules;
-extern Range* mid_module;
-
/* Total code size in bytes */
extern Uint erts_total_code_size;
/*
@@ -126,4 +121,26 @@ extern Uint erts_total_code_size;
*/
#define MI_FUNCTIONS 13
+
+/*
+ * Layout of the line table.
+ */
+
+#define MI_LINE_FNAME_PTR 0
+#define MI_LINE_LOC_TAB 1
+#define MI_LINE_LOC_SIZE 2
+#define MI_LINE_FUNC_TAB 3
+
+#define LINE_INVALID_LOCATION (0)
+
+/*
+ * Macros for manipulating locations.
+ */
+
+#define IS_VALID_LOCATION(File, Line) \
+ ((unsigned) (File) < 255 && (unsigned) (Line) < ((1 << 24) - 1))
+#define MAKE_LOCATION(File, Line) (((File) << 24) | (Line))
+#define LOC_FILE(Loc) ((Loc) >> 24)
+#define LOC_LINE(Loc) ((Loc) & ((1 << 24)-1))
+
#endif /* _BEAM_LOAD_H */
diff --git a/erts/emulator/beam/beam_ranges.c b/erts/emulator/beam/beam_ranges.c
new file mode 100644
index 0000000000..063b319f7a
--- /dev/null
+++ b/erts/emulator/beam/beam_ranges.c
@@ -0,0 +1,205 @@
+/*
+ * %CopyrightBegin%
+ *
+ * Copyright Ericsson AB 2012. All Rights Reserved.
+ *
+ * The contents of this file are subject to the Erlang Public License,
+ * Version 1.1, (the "License"); you may not use this file except in
+ * compliance with the License. You should have received a copy of the
+ * Erlang Public License along with this software. If not, it can be
+ * retrieved online at http://www.erlang.org/.
+ *
+ * Software distributed under the License is distributed on an "AS IS"
+ * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
+ * the License for the specific language governing rights and limitations
+ * under the License.
+ *
+ * %CopyrightEnd%
+ */
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#include "sys.h"
+#include "erl_vm.h"
+#include "global.h"
+#include "beam_load.h"
+
+static void lookup_loc(FunctionInfo* fi, BeamInstr* pc,
+ BeamInstr* modp, int idx);
+
+/*
+ * The following variables keep a sorted list of address ranges for
+ * each module. It allows us to quickly find a function given an
+ * instruction pointer.
+ */
+static Range* modules = NULL; /* Sorted lists of module addresses. */
+static int num_loaded_modules; /* Number of loaded modules. */
+static int allocated_modules; /* Number of slots allocated. */
+static Range* mid_module = NULL; /* Cached search start point */
+
+void
+erts_init_ranges(void)
+{
+ allocated_modules = 128;
+ modules = (Range *) erts_alloc(ERTS_ALC_T_MODULE_REFS,
+ allocated_modules*sizeof(Range));
+ mid_module = modules;
+ num_loaded_modules = 0;
+}
+
+void
+erts_update_ranges(BeamInstr* code, Uint size)
+{
+ int i;
+
+ if (num_loaded_modules == allocated_modules) {
+ allocated_modules *= 2;
+ modules = (Range *) erts_realloc(ERTS_ALC_T_MODULE_REFS,
+ (void *) modules,
+ allocated_modules * sizeof(Range));
+ }
+ for (i = num_loaded_modules; i > 0; i--) {
+ if (code > modules[i-1].start) {
+ break;
+ }
+ modules[i] = modules[i-1];
+ }
+ modules[i].start = code;
+ modules[i].end = (BeamInstr *) (((byte *)code) + size);
+ num_loaded_modules++;
+ mid_module = &modules[num_loaded_modules/2];
+}
+
+void
+erts_remove_from_ranges(BeamInstr* code)
+{
+ int i;
+
+ for (i = 0; i < num_loaded_modules; i++) {
+ if (modules[i].start == code) {
+ num_loaded_modules--;
+ while (i < num_loaded_modules) {
+ modules[i] = modules[i+1];
+ i++;
+ }
+ mid_module = &modules[num_loaded_modules/2];
+ return;
+ }
+ }
+ ASSERT(0); /* Not found? */
+}
+
+Uint
+erts_ranges_sz(void)
+{
+ return allocated_modules*sizeof(Range);
+}
+
+/*
+ * Find a function from the given pc and fill information in
+ * the FunctionInfo struct. If the full_info is non-zero, fill
+ * in all available information (including location in the
+ * source code). If no function is found, the 'current' field
+ * will be set to NULL.
+ */
+
+void
+erts_lookup_function_info(FunctionInfo* fi, BeamInstr* pc, int full_info)
+{
+ Range* low = modules;
+ Range* high = low + num_loaded_modules;
+ Range* mid = mid_module;
+
+ fi->current = NULL;
+ fi->needed = 5;
+ fi->loc = LINE_INVALID_LOCATION;
+ while (low < high) {
+ if (pc < mid->start) {
+ high = mid;
+ } else if (pc > mid->end) {
+ low = mid + 1;
+ } else {
+ BeamInstr** low1 = (BeamInstr **) (mid->start + MI_FUNCTIONS);
+ BeamInstr** high1 = low1 + mid->start[MI_NUM_FUNCTIONS];
+ BeamInstr** mid1;
+
+ while (low1 < high1) {
+ mid1 = low1 + (high1-low1) / 2;
+ if (pc < mid1[0]) {
+ high1 = mid1;
+ } else if (pc < mid1[1]) {
+ mid_module = mid;
+ fi->current = mid1[0]+2;
+ if (full_info) {
+ BeamInstr** fp = (BeamInstr **) (mid->start +
+ MI_FUNCTIONS);
+ int idx = mid1 - fp;
+ lookup_loc(fi, pc, mid->start, idx);
+ }
+ return;
+ } else {
+ low1 = mid1 + 1;
+ }
+ }
+ return;
+ }
+ mid = low + (high-low) / 2;
+ }
+}
+
+static void
+lookup_loc(FunctionInfo* fi, BeamInstr* orig_pc, BeamInstr* modp, int idx)
+{
+ Eterm* line = (Eterm *) modp[MI_LINE_TABLE];
+ Eterm* low;
+ Eterm* high;
+ Eterm* mid;
+ Eterm pc;
+
+ if (line == 0) {
+ return;
+ }
+
+ pc = (Eterm) (BeamInstr) orig_pc;
+ fi->fname_ptr = (Eterm *) (BeamInstr) line[MI_LINE_FNAME_PTR];
+ low = (Eterm *) (BeamInstr) line[MI_LINE_FUNC_TAB+idx];
+ high = (Eterm *) (BeamInstr) line[MI_LINE_FUNC_TAB+idx+1];
+ while (high > low) {
+ mid = low + (high-low) / 2;
+ if (pc < mid[0]) {
+ high = mid;
+ } else if (pc < mid[1]) {
+ int file;
+ int index = mid - (Eterm *) (BeamInstr) line[MI_LINE_FUNC_TAB];
+
+ if (line[MI_LINE_LOC_SIZE] == 2) {
+ Uint16* loc_table =
+ (Uint16 *) (BeamInstr) line[MI_LINE_LOC_TAB];
+ fi->loc = loc_table[index];
+ } else {
+ Uint32* loc_table =
+ (Uint32 *) (BeamInstr) line[MI_LINE_LOC_TAB];
+ ASSERT(line[MI_LINE_LOC_SIZE] == 4);
+ fi->loc = loc_table[index];
+ }
+ if (fi->loc == LINE_INVALID_LOCATION) {
+ return;
+ }
+ fi->needed += 3+2+3+2;
+ file = LOC_FILE(fi->loc);
+ if (file == 0) {
+ /* Special case: Module name with ".erl" appended */
+ Atom* mod_atom = atom_tab(atom_val(fi->current[0]));
+ fi->needed += 2*(mod_atom->len+4);
+ } else {
+ Atom* ap = atom_tab(atom_val((fi->fname_ptr)[file-1]));
+ fi->needed += 2*ap->len;
+ }
+ return;
+ } else {
+ low = mid + 1;
+ }
+ }
+}
diff --git a/erts/emulator/beam/erl_alloc.c b/erts/emulator/beam/erl_alloc.c
index 07a2539367..bf7c53bf1a 100644
--- a/erts/emulator/beam/erl_alloc.c
+++ b/erts/emulator/beam/erl_alloc.c
@@ -2187,7 +2187,7 @@ erts_memory(int *print_to_p, void *print_to_arg, void *proc, Eterm earg)
size.code += export_table_sz();
size.code += export_list_size(erts_active_code_ix()) * sizeof(Export);
size.code += erts_fun_table_sz();
- size.code += allocated_modules*sizeof(Range);
+ size.code += erts_ranges_sz();
size.code += erts_total_code_size;
}
@@ -2350,7 +2350,7 @@ erts_allocated_areas(int *print_to_p, void *print_to_arg, void *proc)
values[i].arity = 2;
values[i].name = "module_refs";
- values[i].ui[0] = allocated_modules*sizeof(Range);
+ values[i].ui[0] = erts_ranges_sz();
i++;
values[i].arity = 2;
diff --git a/erts/emulator/beam/global.h b/erts/emulator/beam/global.h
index 4ce6ed5280..05517ac9e8 100644
--- a/erts/emulator/beam/global.h
+++ b/erts/emulator/beam/global.h
@@ -884,12 +884,18 @@ void init_load(void);
BeamInstr* find_function_from_pc(BeamInstr* pc);
Eterm* erts_build_mfa_item(FunctionInfo* fi, Eterm* hp,
Eterm args, Eterm* mfa_p);
-void erts_lookup_function_info(FunctionInfo* fi, BeamInstr* pc, int full_info);
void erts_set_current_function(FunctionInfo* fi, BeamInstr* current);
Eterm erts_module_info_0(Process* p, Eterm module);
Eterm erts_module_info_1(Process* p, Eterm module, Eterm what);
Eterm erts_make_stub_module(Process* p, Eterm Mod, Eterm Beam, Eterm Info);
+/* beam_ranges.c */
+void erts_init_ranges(void);
+void erts_update_ranges(BeamInstr* code, Uint size);
+void erts_remove_from_ranges(BeamInstr* code);
+Uint erts_ranges_sz(void);
+void erts_lookup_function_info(FunctionInfo* fi, BeamInstr* pc, int full_info);
+
/* break.c */
void init_break_handler(void);
void erts_set_ignore_break(void);
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-05 07:18:20 +0000