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libsysprof: add support for calculating temporary allocations

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This is useful to find allocations free'd right after they were created.

A temporary allocation is currently defined as a free() right after an
allocation of that same memory address. From a quick glance, that appears
to be similar to what I've been seeing in heaptrack all these years.

In the long term, I'd expect we can do something more useful such as
"freed from similar stack trace" since things like g_strdup_printf()
would obviously break important temporary allocations.
This commit is contained in:
Christian Hergert
2020-02-18 17:18:04 -08:00
parent 87004f5d24
commit 84e2c288dc
2 changed files with 310 additions and 12 deletions
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25
src/libsysprof/sysprof-memprof-profile.h
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@ -33,21 +33,32 @@ G_BEGIN_DECLS
#define SYSPROF_TYPE_MEMPROF_PROFILE (sysprof_memprof_profile_get_type())
typedef enum
{
SYSPROF_MEMPROF_MODE_ALL_ALLOCS = 1,
SYSPROF_MEMPROF_MODE_TEMP_ALLOCS = 2,
} SysprofMemprofMode;
SYSPROF_AVAILABLE_IN_ALL
G_DECLARE_FINAL_TYPE (SysprofMemprofProfile, sysprof_memprof_profile, SYSPROF, MEMPROF_PROFILE, GObject)
SYSPROF_AVAILABLE_IN_3_36
SysprofProfile *sysprof_memprof_profile_new (void);
SysprofProfile *sysprof_memprof_profile_new (void);
SYSPROF_AVAILABLE_IN_3_36
SysprofProfile *sysprof_memprof_profile_new_with_selection (SysprofSelection *selection);
SysprofProfile *sysprof_memprof_profile_new_with_selection (SysprofSelection *selection);
SYSPROF_AVAILABLE_IN_3_36
gpointer sysprof_memprof_profile_get_native (SysprofMemprofProfile *self);
SysprofMemprofMode sysprof_memprof_profile_get_mode (SysprofMemprofProfile *self);
SYSPROF_AVAILABLE_IN_3_36
gpointer sysprof_memprof_profile_get_stash (SysprofMemprofProfile *self);
void sysprof_memprof_profile_set_mode (SysprofMemprofProfile *self,
SysprofMemprofMode mode);
SYSPROF_AVAILABLE_IN_3_36
gboolean sysprof_memprof_profile_is_empty (SysprofMemprofProfile *self);
gpointer sysprof_memprof_profile_get_native (SysprofMemprofProfile *self);
SYSPROF_AVAILABLE_IN_3_36
GQuark sysprof_memprof_profile_get_tag (SysprofMemprofProfile *self,
const gchar *symbol);
gpointer sysprof_memprof_profile_get_stash (SysprofMemprofProfile *self);
SYSPROF_AVAILABLE_IN_3_36
gboolean sysprof_memprof_profile_is_empty (SysprofMemprofProfile *self);
SYSPROF_AVAILABLE_IN_3_36
GQuark sysprof_memprof_profile_get_tag (SysprofMemprofProfile *self,
const gchar *symbol);
G_END_DECLS